I think this honestly comes down to driver support rather than the Xorg stack. I dual boot with Windows 8.1 (Which is the OS supported by my manufacturer) and Arch Linux, and Arch is consistently more stable and faster for viewing videos and playing games than W8.1.
For example, I tried watching TNG from my external drive the other day (Using the latest VLC for both). On Linux this isn't a problem, the quality is good and there's no stuttering. On Windows it was hellish: The quality was extremely poor and it froze every (literal) 10 seconds to grab more data from the disk.
For example, I tried watching TNG from my external drive the other day (Using the latest VLC for both). On Linux this isn't a problem, the quality is good and there's no stuttering. On Windows it was hellish: The quality was extremely poor and it froze every (literal) 10 seconds to grab more data from the disk.