I had a similar problem like this yesterday regarding my H2H. I was told the signal showing 29% is just a firmware bug and not a problem.
My problem though regarding some of the channels i had a ''Forward Path Attenuator'' on my router, i didn't think anything of it but took it off to just to see and the channels that was giving me problems were playing fine.
I was testing mine out last night during the Barcelona game on SS2HD and it was very choppy/glitchy, after i took the connector off the router i was able to watch the rest of the game without a single hiccup.
Don't know if that may be your problem but was similar to mine, so thought i'd share in case it is :-)