- Edited
Lonkilan It's a browser thing. It will get fixed at some point.
2880p Is still well above the official AVC spec. and even runs fine because of the Qualcomm XR2 chip. - In comparison, an RTX 4090 can't decode this.
But correct, use HEVC/H.265 instead, in particularly for anything over 2160p.
For VR on PC, I'd even say anything over 1920p