I happened to have my Corsair Link monitoring the core temps on my dual monitors when I processed 75 raw files and was supprised to notice that only one thread was processing, although two were selected in preference. I changed the preferences to 4 and reran another 100 from a different folder. Same thing, only one thread was processing.
Windows 10, latest updates, I was wondering why the processing was so slow on this 4GHz (8200 SSD read) machine. Anyone else seeing this kind of a problem?