Uncheck the option Edit > Preferences > Performance > Use Graphics Processor.
I had this issue in windows 8 and you suggested fix worked fine. After upgrading to windows 10, which required a re-install of Lightroom, I have the problem again. This time the program does not allow me to uncheck the option. Lightroom freezes when I attempt to uncheck the box. Any other suggestions?
Revert to your previous operating system.
Make sure your Graphics card is Up to date.Download latest drivers from Manufacture's website .
Else you could use the manual method of Disabling the Use Of Graphics Processor just in Lightroom.See Answer to this post Lightroom CC freezes when on Develop mode
Let us know if that helps