FYI the problem is the lack of graphics drivers, but is also impacted by certain cards behaviour with the default display driver.
Tested with a large 4K screen (possibly a contributing factor).
My experience:
older amd gpu: garbage experience with microtext on a tiny resolution
new nvidia gpu: usable resolution (but not full) with expected text size, OK experience.
new nvidia gpu + nvidia unraid build (aka having gpu drivers): full resolution, expected text size, great experience
I would expect new AMD with drivers to also be great, but new AMD with default driver might be a crappshoot.