** Windows 7 Pro 64 Bit
** LR CC 2015.4
a) formerly I used the non-CC variant (LR 6.4) but almost every 10th movement of a slider in the development module freezes LR
b) a week ago I switched to "LR Photoshop CC"; after complete LR 6.4 uninstall the CC variant 2015.4 was installed
c) freezes still present, but not so frequent -- now there are 3 to 5 freezes per day
e) the Windows Event Log reports (in German, I'll try to translate it)
-- error bucket, type 0
-- event name: AppHangB1
-- answer; n.a.
-- CAB-file-ID: 0
these files possibly located here:
Try disabling the GPU.
Go to Edit > Preferences > Performance, and uncheck Use graphics processor.
Thank you for your answer.
GPU is disabled now; I will test it for some days.
Up to now, no freezes encountered -- will test for some more days