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Author Topic: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1  (Read 1961 times)

Fred Salamon

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I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1

Since upgrading to LR CC 2015.12 I am experiencing very slow performance in both the Library and Develop Modules. Upwards of 30-60 seconds to open an image, whereas before upgrading my system was running fine with no delays when opening images. Sometimes images will open quickly as they did before the upgrade but only 1 or 2, by the 3rd image everything slows down again.

I have optimized my catalog, checked to make sure I am using the latest driver for my video card, Standard Preview Size is set to Auto (1920px), and Preview Quality is set to Medium. I have tried with GPU Acceleration turned on and off with no change in performance.

I am aware of all the discussion on the various forums about Lightroom CC 2015 performance issues.

What I do not understand is why since upgrading to CC2015.12 is the performance of my older standalone version 5.7.1 affected as well?

I purposely keep both versions on my system to avoid such problems in case of upgrade issues.

Both versions are on an SSD that has about 50% free space as are my Lightroom Catalog and Previews.

I do not know what else to check or where to look in my system to see what can be done to get back the performance I was getting before the upgrade.

Is my only option to uninstall Lightroom CC2015.12 and reinstall an earlier version that did not cause any issues with performance? What if any are the pros and cons of taking that step, and how might that affect my version of 5.7.1?

What other possible steps might I take? What might be the cause of the problem?
Any help would be greatly appreciated.

System info for both versions is as follows:

Lightroom CC2015.12

Lightroom version: CC 2015.12 [ 1125239 ]
License: Creative Cloud
Operating system: Windows 7
Version: 6.1
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 3.4 GHz
Built-in memory: 16360.8 MB
Real memory available to Lightroom: 16360.8 MB
Real memory used by Lightroom: 535.1 MB (3.2%)
Virtual memory used by Lightroom: 658.7 MB
GDI objects count: 430
USER objects count: 1399
Process handles count: 1063
Memory cache size: 172.0MB / 3859.1MB (4.5%)
Maximum thread count used by Camera Raw: 5
Camera Raw SIMD optimization: SSE2,AVX
Camera Raw virtual memory: 123MB / 8180MB (1%)
System DPI setting: 120 DPI
Desktop composition enabled: Yes
Displays: 1) 1920x1200
Input types: Multitouch: No, Integrated touch: No, Integrated pen: Yes, External touch: No, External pen: Yes, Keyboard: No

Graphics Processor Info:
GeForce GTS 450/PCIe/SSE2

Check OpenGL support: Passed
Vendor: NVIDIA Corporation
Version: 3.3.0 NVIDIA 384.94
Renderer: GeForce GTS 450/PCIe/SSE2
LanguageVersion: 3.30 NVIDIA via Cg compiler


Application folder: C:\Program Files\Adobe\Adobe Lightroom
Library Path: C:\Users\Fred\Pictures\Lightroom\Lightroom Catalog.lrcat
Settings Folder: C:\Users\Fred\AppData\Roaming\Adobe\Lightroom

Installed Plugins:
1) Epson Print Layout
2) HDR Efex Pro 2
3) Perfect Effects 9

Config.lua flags: None

Adapter #1: Vendor : 10de
   Device : dc4
   Subsystem : 14503842
   Revision : a1
   Video Memory : 979
AudioDeviceIOBlockSize: 1024
AudioDeviceName: Speakers (Realtek High Definition Audio)
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 48000
Build: Uninitialized
Direct2DEnabled: false
GL_ACCUM_ALPHA_BITS: 16
GL_ACCUM_BLUE_BITS: 16
GL_ACCUM_GREEN_BITS: 16
GL_ACCUM_RED_BITS: 16
GL_ALPHA_BITS: 0
GL_BLUE_BITS: 8
GL_DEPTH_BITS: 24
GL_GREEN_BITS: 8
GL_MAX_3D_TEXTURE_SIZE: 2048
GL_MAX_TEXTURE_SIZE: 16384
GL_MAX_TEXTURE_UNITS: 4
GL_MAX_VIEWPORT_DIMS: 16384,16384
GL_RED_BITS: 8
GL_RENDERER: GeForce GTS 450/PCIe/SSE2
GL_SHADING_LANGUAGE_VERSION: 4.50 NVIDIA
GL_STENCIL_BITS: 8
GL_VENDOR: NVIDIA Corporation
GL_VERSION: 4.5.0 NVIDIA 384.94
GPUDeviceEnabled: false
OGLEnabled: true
GL_EXTENSIONS: GL_AMD_multi_draw_indirect GL_ARB_arrays_of_arrays GL_ARB_base_instance GL_ARB_blend_func_extended GL_ARB_buffer_storage GL_ARB_clear_buffer_object GL_ARB_clear_texture GL_ARB_clip_control GL_ARB_color_buffer_float GL_ARB_compatibility GL_ARB_compressed_texture_pixel_storage GL_ARB_conservative_depth GL_ARB_compute_shader GL_ARB_compute_variable_group_size GL_ARB_conditional_render_inverted GL_ARB_copy_buffer GL_ARB_copy_image GL_ARB_cull_distance GL_ARB_debug_output GL_ARB_depth_buffer_float GL_ARB_depth_clamp GL_ARB_depth_texture GL_ARB_derivative_control GL_ARB_direct_state_access GL_ARB_draw_buffers GL_ARB_draw_buffers_blend GL_ARB_draw_indirect GL_ARB_draw_elements_base_vertex GL_ARB_draw_instanced GL_ARB_enhanced_layouts GL_ARB_ES2_compatibility GL_ARB_ES3_compatibility GL_ARB_ES3_1_compatibility GL_ARB_ES3_2_compatibility GL_ARB_explicit_attrib_location GL_ARB_explicit_uniform_location GL_ARB_fragment_coord_conventions GL_ARB_fragment_layer_viewport GL_ARB_fragment_program GL_ARB_fragment_program_shadow GL_ARB_fragment_shader GL_ARB_framebuffer_no_attachments GL_ARB_framebuffer_object GL_ARB_framebuffer_sRGB GL_ARB_geometry_shader4 GL_ARB_get_program_binary GL_ARB_get_texture_sub_image GL_ARB_gl_spirv GL_ARB_gpu_shader5 GL_ARB_gpu_shader_fp64 GL_ARB_gpu_shader_int64 GL_ARB_half_float_pixel GL_ARB_half_float_vertex GL_ARB_imaging GL_ARB_indirect_parameters GL_ARB_instanced_arrays GL_ARB_internalformat_query GL_ARB_internalformat_query2 GL_ARB_invalidate_subdata GL_ARB_map_buffer_alignment GL_ARB_map_buffer_range GL_ARB_multi_bind GL_ARB_multi_draw_indirect GL_ARB_multisample GL_ARB_multitexture GL_ARB_occlusion_query GL_ARB_occlusion_query2 GL_ARB_parallel_shader_compile GL_ARB_pipeline_statistics_query GL_ARB_pixel_buffer_object GL_ARB_point_parameters GL_ARB_point_sprite GL_ARB_program_interface_query GL_ARB_provoking_vertex GL_ARB_query_buffer_object GL_ARB_robust_buffer_access_behavior GL_ARB_robustness GL_ARB_sample_shading GL_ARB_sampler_objects GL_ARB_seamless_cube_map GL_ARB_separate_shader_objects GL_ARB_shader_atomic_counter_ops GL_ARB_shader_atomic_counters GL_ARB_shader_bit_encoding GL_ARB_shader_draw_parameters GL_ARB_shader_group_vote GL_ARB_shader_image_load_store GL_ARB_shader_image_size GL_ARB_shader_objects GL_ARB_shader_precision GL_ARB_shader_storage_buffer_object GL_ARB_shader_subroutine GL_ARB_shader_texture_image_samples GL_ARB_shader_texture_lod GL_ARB_shading_language_100 GL_ARB_shading_language_420pack GL_ARB_shading_language_include GL_ARB_shading_language_packing GL_ARB_shadow GL_ARB_sparse_buffer GL_ARB_sparse_texture GL_ARB_stencil_texturing GL_ARB_sync GL_ARB_tessellation_shader GL_ARB_texture_barrier GL_ARB_texture_border_clamp GL_ARB_texture_buffer_object GL_ARB_texture_buffer_object_rgb32 GL_ARB_texture_buffer_range GL_ARB_texture_compression GL_ARB_texture_compression_bptc GL_ARB_texture_compression_rgtc GL_ARB_texture_cube_map GL_ARB_texture_cube_map_array GL_ARB_texture_env_add GL_ARB_texture_env_combine GL_ARB_texture_env_crossbar GL_ARB_texture_env_dot3 GL_ARB_texture_float GL_ARB_texture_gather GL_ARB_texture_mirror_clamp_to_edge GL_ARB_texture_mirrored_repeat GL_ARB_texture_multisample GL_ARB_texture_non_power_of_two GL_ARB_texture_query_levels GL_ARB_texture_query_lod GL_ARB_texture_rectangle GL_ARB_texture_rg GL_ARB_texture_rgb10_a2ui GL_ARB_texture_stencil8 GL_ARB_texture_storage GL_ARB_texture_storage_multisample GL_ARB_texture_swizzle GL_ARB_texture_view GL_ARB_timer_query GL_ARB_transform_feedback2 GL_ARB_transform_feedback3 GL_ARB_transform_feedback_instanced GL_ARB_transform_feedback_overflow_query GL_ARB_transpose_matrix GL_ARB_uniform_buffer_object GL_ARB_vertex_array_bgra GL_ARB_vertex_array_object GL_ARB_vertex_attrib_64bit GL_ARB_vertex_attrib_binding GL_ARB_vertex_buffer_object GL_ARB_vertex_program GL_ARB_vertex_shader GL_ARB_vertex_type_10f_11f_11f_rev GL_ARB_vertex_type_2_10_10_10_rev GL_ARB_viewport_array GL_ARB_window_pos GL_ATI_draw_buffers GL_ATI_texture_float GL_ATI_texture_mirror_once GL_S3_s3tc GL_EXT_texture_env_add GL_EXT_abgr GL_EXT_bgra GL_EXT_bindable_uniform GL_EXT_blend_color GL_EXT_blend_equation_separate GL_EXT_blend_func_separate GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_compiled_vertex_array GL_EXT_Cg_shader GL_EXT_depth_bounds_test GL_EXT_direct_state_access GL_EXT_draw_buffers2 GL_EXT_draw_instanced GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_framebuffer_blit GL_EXT_framebuffer_multisample GL_EXTX_framebuffer_mixed_formats GL_EXT_framebuffer_multisample_blit_scaled GL_EXT_framebuffer_object GL_EXT_framebuffer_sRGB GL_EXT_geometry_shader4 GL_EXT_gpu_program_parameters GL_EXT_gpu_shader4 GL_EXT_multi_draw_arrays GL_EXT_packed_depth_stencil GL_EXT_packed_float GL_EXT_packed_pixels GL_EXT_pixel_buffer_object GL_EXT_point_parameters GL_EXT_polygon_offset_clamp GL_EXT_provoking_vertex GL_EXT_rescale_normal GL_EXT_secondary_color GL_EXT_separate_shader_objects GL_EXT_separate_specular_color GL_EXT_shader_image_load_store GL_EXT_shader_integer_mix GL_EXT_shadow_funcs GL_EXT_stencil_two_side GL_EXT_stencil_wrap GL_EXT_texture3D GL_EXT_texture_array GL_EXT_texture_buffer_object GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_latc GL_EXT_texture_compression_rgtc GL_EXT_texture_compression_s3tc GL_EXT_texture_cube_map GL_EXT_texture_edge_clamp GL_EXT_texture_env_combine GL_EXT_texture_env_dot3 GL_EXT_texture_filter_anisotropic GL_EXT_texture_integer GL_EXT_texture_lod GL_EXT_texture_lod_bias GL_EXT_texture_mirror_clamp GL_EXT_texture_object GL_EXT_texture_shared_exponent GL_EXT_texture_sRGB GL_EXT_texture_sRGB_decode GL_EXT_texture_storage GL_EXT_texture_swizzle GL_EXT_timer_query GL_EXT_transform_feedback2 GL_EXT_vertex_array GL_EXT_vertex_array_bgra GL_EXT_vertex_attrib_64bit GL_EXT_window_rectangles GL_EXT_import_sync_object GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat GL_KHR_context_flush_control GL_KHR_debug GL_KHR_no_error GL_KHR_robust_buffer_access_behavior GL_KHR_robustness GL_KTX_buffer_region GL_NV_alpha_to_coverage_dither_control GL_NV_bindless_multi_draw_indirect GL_NV_bindless_multi_draw_indirect_count GL_NV_blend_equation_advanced GL_NV_blend_square GL_NV_command_list GL_NV_compute_program5 GL_NV_conditional_render GL_NV_copy_depth_to_color GL_NV_copy_image GL_NV_depth_buffer_float GL_NV_depth_clamp GL_NV_draw_texture GL_NV_ES1_1_compatibility GL_NV_ES3_1_compatibility GL_NV_explicit_multisample GL_NV_fence GL_NV_float_buffer GL_NV_fog_distance GL_NV_fragment_program GL_NV_fragment_program_option GL_NV_fragment_program2 GL_NV_framebuffer_multisample_coverage GL_NV_geometry_shader4 GL_NV_gpu_program4 GL_NV_internalformat_sample_query GL_NV_gpu_program4_1 GL_NV_gpu_program5 GL_NV_gpu_program5_mem_extended GL_NV_gpu_program_fp64 GL_NV_gpu_shader5 GL_NV_half_float GL_NV_light_max_exponent GL_NV_multisample_coverage GL_NV_multisample_filter_hint GL_NV_occlusion_query GL_NV_packed_depth_stencil GL_NV_parameter_buffer_object GL_NV_parameter_buffer_object2 GL_NV_path_rendering GL_NV_pixel_data_range GL_NV_point_sprite GL_NV_primitive_restart GL_NV_register_combiners GL_NV_register_combiners2 GL_NV_shader_atomic_counters GL_NV_shader_atomic_float GL_NV_shader_buffer_load GL_NV_shader_storage_buffer_object GL_NV_texgen_reflection GL_NV_texture_barrier GL_NV_texture_compression_vtc GL_NV_texture_env_combine4 GL_NV_texture_multisample GL_NV_texture_rectangle GL_NV_texture_shader GL_NV_texture_shader2 GL_NV_texture_shader3 GL_NV_transform_feedback GL_NV_transform_feedback2 GL_NV_uniform_buffer_unified_memory GL_NV_vertex_array_range GL_NV_vertex_array_range2 GL_NV_vertex_attrib_integer_64bit GL_NV_vertex_buffer_unified_memory GL_NV_vertex_program GL_NV_vertex_program1_1 GL_NV_vertex_program2 GL_NV_vertex_program2_option GL_NV_vertex_program3 GL_NVX_conditional_render GL_NVX_gpu_memory_info GL_NVX_multigpu_info GL_NV_shader_thread_group GL_KHR_blend_equation_advanced GL_SGIS_generate_mipmap GL_SGIS_texture_lod GL_SGIX_depth_texture GL_SGIX_shadow GL_SUN_slice_accum GL_WIN_swap_hint WGL_EXT_swap_control


Lightroom 5.7.1

Lightroom version: 5.7.1 [994254]
License type: Creative Cloud
Operating system: Windows 7 Home Premium Edition
Version: 6.1 [7601]
Application architecture: x64
System architecture: x64
Logical processor count: 8
Processor speed: 3.4 GHz
Built-in memory: 16360.8 MB
Real memory available to Lightroom: 16360.8 MB
Real memory used by Lightroom: 392.6 MB (2.4%)
Virtual memory used by Lightroom: 361.9 MB
Memory cache size: 149.4 MB
Maximum thread count used by Camera Raw: 4
System DPI setting: 120 DPI
Desktop composition enabled: Yes
Displays: 1) 1920x1200

Application folder: C:\Program Files\Adobe\Adobe Photoshop Lightroom 5.7.1
Library Path: C:\Users\Fred\Pictures\Lightroom\Backups\2013-03-08 1746\Lightroom 5 Catalog.lrcat
Settings Folder: C:\Users\Fred\AppData\Roaming\Adobe\Lightroom

Installed Plugins:
1) Behance
2) Canon Tether Plugin
3) Epson Print Layout
4) Facebook
5) Flickr
6) HDR Efex Pro 2
7) Leica Tether Plugin
8) Nikon Tether Plugin
9) Perfect Effects 4
10) Perfect Effects 9

Config.lua flags: None

Adapter #1: Vendor : 10de
   Device : dc4
   Subsystem : 14503842
   Revision : a1
   Video Memory : 979
AudioDeviceIOBlockSize: 1024
AudioDeviceName: Speakers (Realtek High Definition Audio)
AudioDeviceNumberOfChannels: 2
AudioDeviceSampleRate: 44100
Build: Uninitialized
CardID: 3524
Direct2DEnabled: false
GPUDevice: D3D
MaxTexture2DSize: 8192
OGLEnabled: true
Renderer: NVIDIA GeForce GTS 450
ShaderModel: 11.1
Vendor: Nvidia
VendorID: 4318
Version: 10de:0dc4:14503842:00a1

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Mark D Segal

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #1 on: August 03, 2017, 03:23:59 PM »

I have no particular technical background for sleuthing such issues, but the first thing that struck me is the age of your operating system: Windows 7 is pretty long in the tooth by now in terms of "computer years" and I'm just wondering whether some recent changes under the hood to the software aren't playing nicely with Windows 7 - what and why I wouldn't have a clue, but generally seeing issues of this kind with upgrades one would naturally look to possible frictions between the newer version of the app and an aged OS. Just guessing here.
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Mark D Segal (formerly MarkDS)
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Simon J.A. Simpson

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #2 on: August 03, 2017, 04:22:48 PM »

It would seem that one thing common to both Lightroom CC and the standalone version would be the catalogue.  I have a vague memory that when I first opened CC 2015.12 after upgrading (on a Mac) there was some onscreen message about the catalogue being updated.  Could this be it ?

To check you could try creating a new (temporary) catalogue with just a few images and see if the problem goes away ?

Or perhaps it is as Mark suggests ?
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FranciscoDisilvestro

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #3 on: August 03, 2017, 05:10:54 PM »

I don't think Windows 7 is an issue. Try resetting the preferences and clear the cache. Also, increase the size of cache.

Wayne Fox

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #4 on: August 04, 2017, 12:38:15 AM »

It would seem that one thing common to both Lightroom CC and the standalone version would be the catalogue.  I have a vague memory that when I first opened CC 2015.12 after upgrading (on a Mac) there was some onscreen message about the catalogue being updated.  Could this be it ?

To check you could try creating a new (temporary) catalogue with just a few images and see if the problem goes away ?

Or perhaps it is as Mark suggests ?
I'm assuming you aren't opening the same catalog, since you can't open a LR 5 catalog with version 6 or CC 2015 and vice versa.  I'm not sure why you would keep both versions in case of an upgrade problem, since you can always downgrade to the previous version if you upgrade (within the same major release).  I'm not sure how keeping version 5 would help.

If this was a typo and indeed you are using LR 6.xx stand alone as well as LR CC 2015, those versions share many of the system files, so upgrading one would affect the other.

As to why it's suddenly "slow", testing a new catalog, clearing the cache, resetting preferences all seem like logical steps to try and isolate the problem.  It also could be some internal changes that are struggling with the older operating system.  It also could be not related to LR at all, but a hardware issue.

One thing to check is if the GPU was enabled with the update, and you need to disable it (several old GPU's struggle with LR).

Fred Salamon

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #5 on: August 05, 2017, 01:10:44 AM »

I'm assuming you aren't opening the same catalog, since you can't open a LR 5 catalog with version 6 or CC 2015 and vice versa.  I'm not sure why you would keep both versions in case of an upgrade problem, since you can always downgrade to the previous version if you upgrade (within the same major release).  I'm not sure how keeping version 5 would help.

If this was a typo and indeed you are using LR 6.xx stand alone as well as LR CC 2015, those versions share many of the system files, so upgrading one would affect the other.

As to why it's suddenly "slow", testing a new catalog, clearing the cache, resetting preferences all seem like logical steps to try and isolate the problem.  It also could be some internal changes that are struggling with the older operating system.  It also could be not related to LR at all, but a hardware issue.

One thing to check is if the GPU was enabled with the update, and you need to disable it (several old GPU's struggle with LR).

Not opening the same catalog.

Kept both versions because at the time I subscribed to Adobe's Photography Plan I was not certain I would stay with it and wanted at least a workable version of Lightroom. Also, I do not mean to sound flip, but why not keep both versions? Is there a downside other than hard drive space?

I have checked the GPU and found no difference in speed with the GPU on or off since the upgrade.

What I really do not understand is how or why upgrading CC can affect 5.7.1?

As a test I created a new catalog in CC2015.12 with approximately 300 images in it (my main CC2015.12 catalog has over 20000 images). When I open Lightroom CC 2015.12 with the new/test catalog it runs much faster, less that a second to open an image.

Would the size of the catalog affect performance?
Could the upgrade have somehow corrupted the catalog? I do have the catalog backed up, so if necessary I could remove the current catalog and replace it with a backup. If I do need to replace the catalog might it be best to use a backup that was created before I upgraded to CC2015.12?

Many thanks to everyone for all the help.
« Last Edit: August 05, 2017, 01:16:54 AM by Fred Salamon »
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MBehrens

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #6 on: August 05, 2017, 11:52:12 AM »

Fred,

You are using the same settings for both applications

Settings Folder: C:\Users\Fred\AppData\Roaming\Adobe\Lightroom

I'm guessing that the 2 version, one very old and the other latest, are fighting each other to manage their settings. Particularly the preferences file.

There is really no benefit to keeping that old of a version around. If there is a problem with a new version, then roll back to the previous. Despite Adobe having some quality control issues, things are fairly stable right now. Hang on to your standalone authorization code, if you get completely fed up with the CC plan you can always reinstall the last authorized stand-alone version again.

I'd suggest un-installing both versions. Rename the folder C:\Users\Fred\AppData\Roaming\Adobe\Lightroom to ZZ_Lightroom. Install the latest CC version. Then copy any presets from the ZZ_ folder to the new install settings folder(s).
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john beardsworth

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #7 on: August 05, 2017, 12:24:41 PM »

I'm guessing that the 2 version, one very old and the other latest, are fighting each other to manage their settings. Particularly the preferences file.

No, the preference files are different. Lightroom 5's will be called Lightroom 5 Preferences.agprefs, Lightroom 6's will be Lightroom 6 Preferences.agprefs.
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john beardsworth

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #8 on: August 05, 2017, 12:34:23 PM »

Physical problems are likely to explain why 5 and 6 are affected.

How much hard drive space? Review hard drives for any sign of malfunction.

Purge the ACR and video caches.

Review the video card drivers. Up to date? Updating may be the solution - or may have introduced the problem.

Tablet? Update its drivers.

Zap the preferences? More relevant on Mac, but corruption unlikely to affect both 5 and 6 pref files. No harm trying.

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FranciscoDisilvestro

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #9 on: August 05, 2017, 06:24:15 PM »

Another recomended action is to optimize the catalog. File -> Optimize Catalog

Fred Salamon

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #10 on: August 05, 2017, 08:49:55 PM »

Physical problems are likely to explain why 5 and 6 are affected.

How much hard drive space? Review hard drives for any sign of malfunction.

Purge the ACR and video caches.

Review the video card drivers. Up to date? Updating may be the solution - or may have introduced the problem.

Tablet? Update its drivers.

Zap the preferences? More relevant on Mac, but corruption unlikely to affect both 5 and 6 pref files. No harm trying.

Hard drive space is 571GB free on a 960GB SSD
Caches have been purged
Graphics card driver up to date
Not using a tablet
Catalog has been optimized

As a test I created a new catalog with 300 images (regular catalog has over 20,000 images) in CC2015.12
Performance with this test catalog was much improved.

Does the number of images in a catalog affect performance?

I am wondering if it might be hardware issue, as Wayne suggested.
Any ideas on how to check the hardware, what to check etc would be appreciated.
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Fred Salamon

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #11 on: August 23, 2017, 06:02:08 PM »

Just want to update everyone.
Looks like the issue was that some of the RAM went bad and was causing the problem.
I have since replaced the defective RAM and so far things are back to normal.

Thank you to everyone that offered their help and advice.
I really do appreciate your time and efforts.
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Bryan Conner

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #12 on: August 25, 2017, 03:10:53 AM »

I would like to thank you for the follow-up info informing us of the solution to your problem.  Many people ask for help with a problem that others are having only to find the solution elsewhere and never share their newfound solution here. Thanks.
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rdonson

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #13 on: August 25, 2017, 04:22:54 PM »

Just want to update everyone.
Looks like the issue was that some of the RAM went bad and was causing the problem.
I have since replaced the defective RAM and so far things are back to normal.

Thank you to everyone that offered their help and advice.
I really do appreciate your time and efforts.

Fred, I'm glad you solved the problem.  How did you determine it was bad RAM and which RAM stick it might have been?
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Regards,
Ron

Fred Salamon

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #14 on: August 26, 2017, 01:27:32 AM »

Fred, I'm glad you solved the problem.  How did you determine it was bad RAM and which RAM stick it might have been?

I was advised to check my RAM with MemTest, which immediately showed errors.
Since the RAM sticks were several years old I felt it best to replace all four sticks.
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rdonson

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Re: I am having a problem with Lightroom CC 2015.12 and Lightroom 5.7.1
« Reply #15 on: August 26, 2017, 08:59:15 AM »

Thanks, Fred
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Regards,
Ron
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