Judder with rMB and Youtube HD content

[j.quintana]

With my rMB I can see a judder in Youtube videos, both with full screen and windowed. The issue is the same with Safari and Firefox.

The CPU usage is fine though. It does not exceed 20-30%. Playing 1080p videos with VLC from SSD or my NAS is perfectly fine with no judder at all.

So what causes my problem here when I can safely rule out not sufficient CPU power?

 

[TheMountainLife]

I can confirm that I experience the same. VLC playback is smooth.

AirPlay video performance on all browsers and VLC is poor. CPU usage remains low. (ethernet & wifi tested)