In the last 10 minutes or so of the Third Party Developers’ Meeting the problem with AMD video cards problems came up.
It seems especially the R series of video cards (RX480 etc.) have a problem with OpenGL. See: BUG-20057 – Visual Artifacts with ALM enabled on some AMD graphics cards.
This bug is dependent on screen size. So, you may be able to escape it by changing your viewer window size or screen resolution.
There is a thread in the AMD forum about the problem. It is way techy. See: OpenGL display artifact on W7100.
The apparent consensus among the dev’s is AMD is NOT listening to their requests for help nor looking into the problem. This is not simply a Second Life issue. The forum thread is a programmer showing how to reproduce the problem in a pure test case, showing it is a problem in the AMD system.
The current recommendation among dev’s is to abandon AMD and use Nvidia. I suppose FS Support is or will be talking that line too.
This problem has been around for SL and other OpenGL based games since June 2015. That it has been complained about for over a year, suggests it is not going to get fixed any time soon.
Is AMD abandoning OpenGL and moving on to Vulkan? Possibly. The Lab is not looking at moving SL to Vulkan. So… And SL is not the only one staying with or moving to OpenGL. I expect OpenGL to be around for awhile.
If it is true AMD is not supporting OpenGL then we can’t recommend AMD video cards for SL.