Tvheadend

Hi,
I have a problem with tvheadend 3.3.485~gf4dda1b in openelec on a raspberry pi. I have managed to get live tv more or less good, but i have problems with audio out of sync. I get many transport and continuity counter errors. So i contacted the support of my DVB-S Stick (sundtek SkyTV ultimate) today. They said, that the problem is maybe, that every channel on the same mux of the channel i want to watch, is send over usb. They said that it could probably work, if i would only send the channel i want to watch. They have a tool called mediaclient wich shows what is send. This is one example how the output looks like (it shows that the whole mux is transmitted):

• List of Media Clients **
  /dev/dvb/adapter0/frontend0:
  1452 ... tvheadend
  /dev/dvb/adapter0/dvr0:
  1452 ... tvheadend
  /dev/dvb/adapter0/demux0:
  1452 ... tvheadend (0000)
  1452 ... tvheadend (0001)
  1452 ... tvheadend (0010)
  1452 ... tvheadend (0011)
  1452 ... tvheadend (0014)
  1452 ... tvheadend (0029)
  1452 ... tvheadend (09ff)
  1452 ... tvheadend (0a00)
  1452 ... tvheadend (0062)
  1452 ... tvheadend (0061)
  1452 ... tvheadend (0068)
  1452 ... tvheadend (006a)
  1452 ... tvheadend (006b)
  1452 ... tvheadend (0063)
  1452 ... tvheadend (006c)
  1452 ... tvheadend (006e)
  1452 ... tvheadend (0066)
  1452 ... tvheadend (0064)
  1452 ... tvheadend (0065)
  1452 ... tvheadend (0067)
  /dev/mediainput0:
  No client connected

One suggestion was, that tvheadend tries to renew epg data. So i unchecked every checkbox in the EPG configuration in xbmc and tvheadend. I also deactived all mux autodetection. But afterwards there are still messages in the log of tvheadend showing that epg is still renewed. I wanted to ask, if somebody could tell me, what i did wrong and if there is a possibilty to shutdown epg renewal completely? My goal is, that only the channel i want to watch is transmitted.
Thanks a lot and kind regards!
Thomas
P.S. i have made screenshut of my config here:

http://imageshack.us/photo/my-images/197/bildschirmfotovom201302.png

http://imageshack.us/photo/my-images/11/bildschirmfotovom201302s.png