I tried it on some 8K HDR test video on YouTube on Linux/Firefox... All 18 cores and 36 threads at ~96%. NUC with an older Atom (7PJYH) gave like 0.1fps...
Which video and when did you try it? dav1d has improved a lot over time. You should try it again. You should also try any other AV1 video on YouTube. There's a lot of it there these days.
