Hi, previously i used Arch Linux and had the same issues (i dont remember whether I had them always on Arch). Thats why I switched to cachyOS and in the beginning I had no video playback issues in my browser (primarily brave). Now it struck me again. My videos are playing but the image refreshes like every 5 seconds and gets stuck (same as on Arch). The sound is playing normally, no lags. I tried the config on the cachy wiki ( Chromium-Based Browsers HW Acceleration | CachyOS ) for my Graphics Card (AMD RX 7700XT) in brave and brave origin but it didn’t help. The same issue happens on Firefox and Chromium too.
As a reference back then on Windows 11 I had no issues.
Without HW acceleration it works fine. Also when I open video (on Youtube) It loads for a few seconds then it begins and sometimes the video playback is smooth for a few seconds.