I keep geeting White screens in Lightroom

[nigelw64975888]

If I leave Lightroom running and my computer goes to sleep, on wakeup this is what I get.  Lightroom "loses" the image I was working on and replaces it and the slide bar with a blank white screen.  Only solution is to quit from lightroom and restart.  The also sometime happens when I just working on an image, it will freeze for a few seconds and then the image is lost.

[F. McLion]

Did you let it go sleep while in Develop module?

On which storage/disk are your photos stored? Internal drive?

[F. McLion]

Additional question:

Is GPU support turned on? Did you try if it makes a difference if you turn it off?

https://helpx.adobe.com/lightroom-classic/kb/lightroom-gpu-faq.html