I got the problem after the 1.8 upgrade on a Toshiba Portege laptop running the latest Win 10. Lots of pixellation issues. No Intel updates, no updated drivers anywhere. It’s fine on my NUC with Intel 5000, and my Lenovo with Intel 630 graphics. incidentally, the Lenovo did have a problem a few months ago where Roon would not start because of graphics issues, but I managed to get an old driver and that fixed it until Roon did something in an upgrade and the latest graphics drivers worked again.
I’m disappointed in your response. I keep my laptop up-to-date with the latest version of Windows and required patches. Every other application I use works without these glitches. The Roon technical architecture should be evaluated so that it can run smoothly without relying on Open GL3 - just like every other software application.