I just bought myself a RPI4 kit and I am currently testing it. Even if the desktop experience is smooth enough, I am very suprised that the video playback in chromium is very poor. 1080p is playing, but not in fullscreen, so 4K is inaccessible and I had high expectations on that point.
I am running raspbian. I just went through update/upgrade and I also tried to activate the experimental GL driver, in case it could help. But no improvement at all, my video playback is still not good even at 1080p.
I went through the forum, and I tried some changes, but most of the questions are now some months old, so I was expecting this problem to be solved.
What could I check on my side to know if everything is in place and working as expected ? I thought 4K playback was now possible