All of that is a bit over my head, but we are back to the video card:
Graphics
2.05% is too low to play 3D games or use CAD packages. (Note: general computing tasks don't require 3D graphics)
Just to check the real world I streamed a scene from "Sound of Music".
(about 1965 for you youngsters)
The scene played good, but had an occasional jerk/stall.
Will find a 'puter shop tomorrow, buy a new video card and play Sound of Music again.
Full report to follow..