Version 1.17.29 Chromium: 86.0.4240.80 (Official Build) nightly (64-bit)
Version 1.15.72 Chromium: 86.0.4240.75 (Official Build) (64-bit)
By scrolling the affected portions of the page off the top or bottom of the screen or maximizing/restoring the window, or dragging the window around the screen I can make the garbled stuff go away. I don’t see similar behvior on Chrome Desktop or on Edge Chromium on this machine.
Unfortunately, indeterminate is really the descriptor. Sometimes it breaks in seconds, sometimes it’s hours before I see anything. In terms of what’s changed, I have updated graphics drivers, Brave when it’s alerted me about updates and Nightly maybe weekly. I didn’t notice that any of those changes were aligned with the problem. Since it started, I’ve been actively messing with Brave settings and graphics drivers without seeing a resolution. The only other thing that I can think of is that something recently corrupted my Windows PATH environment variable and I’ve been manually adding things to the path as I’ve noticed they’re missing. I could try uninstalling and reinstalling Brave.
I’m a week in and haven’t seen any issues with graphics acceleration disabled other than missing all the advantages that graphics acceleration gives. Not what I’d call a solution, but narrows down the field of potential causes?