Recently after upgrading to LR 6 from LR 4 I have been experiencing terrible performance, which seems to be the standard - Sluggish response on everything.
But worse off any time I would use the develop sliders I would inevitably get a crash from Lightroom.
EVGA Nvidia GTX 560 Ti
Samsung Evo 840 250GB Primary Drive (Lightroom Catalogs/Previews)
2x WD 7200rpm Drives for Photos
Crash. Remove preferences files. It would work for a few photos then crash again. Disable GPU support. Works for a few photos then crash again.
Remove Preferences files. Repeat. I was getting very frustrated, wasting hours of time.
I run two monitors of different resolutions:
IPS LED 1920x1080
The monitor I use lightroom was not the "Primary Display" as setup in Windows 10.
I tried to find anything specifically regarding this being an issue recently looking but remember I read something years ago when looking into LR 5.
I setup my primary monitor in windows to be the IPS monitor that I like to use with lightroom.
Deleted LR Preferences files. GPU Support is enabled by default.
I haven't had a crash for a few days now and speed is similar to LR 4. No terrible lag, just a little.
This is definitely seems like a bug in the software as it is supposed to support multiple monitors and the display on which the lightroom window is placed should cause this much trouble and crashing. I rarely saw crashes using LR 4.
I thought I would share so it might help others with the similar crashing problems, so you might actually get some work done.
Also, try and uncheck the below listed option from the Lightroom Preference, till the next dot release.
Go to General tab
Uncheck the option " Show Add photo screen"