Youtube not buffering very good on Jolla C

Hi all, I installed Google play components as described in https://together.jolla.com/question/114608/howto-install-gapps-gplay-google-play-kk-on-tablet-or-c/ I installed several other apps through the play store, they all work correctly. Only the youtube app is not working correctly it does show content but the content cannot be played. Anyone also this issue? I just did some additional testen with reinstalling multiple components. It is playing know but only for a few seconds (10- 15 seconds), then it needs to do some buffering I just also tried the it on the Jolla 1 phone. I do not have a issue on this phone.