Capped at 540p with VP9

[utack]

Watching Brooklyn Nine-Nine and How I Met Your Mother I am getting stuck at 540p max quality.
I suspect this is the case for all shows encoded in VP9.
Would it be possible for someone else to verify this?
Is there maybe a way to add support for VP9 as well, or to pretend the browser has no VP9 support and use the H264 fallback as a workaround

[informatorius]

I see the same but guess 540p is the max quality available (VP9 used or not).