After upgrading to ACR 8.5, based on the latest CC update, I encounter a delayed reaction of the sliders in ACR opened in Photoshop when using Wacom Intuos Pro and Pen&Touch. All sliders react only with a remarkable delay and they need to be moved to their extremes before they can be moved to the intended position. Moving a slider just a few digits to the left or to right does not work. Using a the mouse works without problems.
Anybody else with this behavior of the Intuos tablets and ACR 8.5.
By the way, LR 5.5--which is also based on ACR 8.5--does not show this strange behavior. Previous ACR versions did not show this behavior either.
Thomas
P.S.: Windows 8.1 64bit, latest Wacom driver