Tvheadend

Hello everyone,

I'm running TVHeadend as a backend as well as frontend on a Raspberry Pi 2 with OpenElec. Everytime I pause the playback for a couple of seconds it freezes shortly after I press play again. The same thing happens when I try to rewind or go forward within the timeshift buffer. I have picked the "use RAM only" option in the timeshift settings, but that sadly doesn't help.
I'm capturing the dvb-s signal by utilizing a DVBSky S960.
I need help with that.