Intel G4600 Kaby Lake - can't watch 4K60 videos on YouTube
Seems like it's decoding in software?
Browser is Waterfox 53.0.1, Intel iGPU driver, was 4590, then updated with Creator's Update, then was later updated to 4664, which was released in May 2017. DXVAChecker reports that VP9_VLD_Profile0 and VP9_VLD_10bit_Profile2 are supported in hardware, for SD / HD / FHD / 4K / 8K. (As it did with 4590.)
I do have the newest version of Windows Skype for Desktop installed and running too.
Waterfox is set to use Hardware Accelleration.
CPU usage is 70% decoding the video, and dropping 1/2 to 2/3 of the frames. (Dual-core with HT)
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