Slow online video download

Extremely slow online video download on my ipod touch 5g (6.0.1)

Trouble occurs only if i'm trying to watch videos on YouTube or social network.

Speed tests show absolutly normal results.

I run some video, and after a few seconds it's download stops. I'm turning off/on the wifi toggle, and download resumes for a few seconds, and stops again.

Hope that this problem will be fixed in 6.1