Running a Dell 7520 Laptop i7, Windows 10, everything up to date. Lots of RAM and video card memory. My display in Photoshop Camera Raw where you process a number of images is scrambled. but if you just proceed to open the image it is fine. In Lightroom, under the Library mode all the small images show up fine. Move to the Develop mode to adjust a single image and it show up the same as Photoshops Camera Raw mode. I have restored defaults in both programs but I still can not figure this one out.
Have you tried UNchecking Use Graphics Processor in Lightroom Preferences?