Hi Jim;
I hear you. I've been using TV tuners on my computer from way back in the late 70's & early 80's (mostly ATI All-IN-Wonder PCIE combo video / TV tuner).
Since then have used various other brands to variable success.
Funny thing is, I had a LOT less problems with the old PCIE cards then today's USB or WiFi / Ethernet cards.
I too have a SiliconDust HD HomeRun Connect Quatro 4-tuner (plus a BUNCH of other brands & models) & it has been a mixed bag for me. Have had various
problems such as...
* It sometimes losses connection & I have to remove & reconnect the power.
* I had another SiliconDust dual tuner; it had a flaky power connector that did not quite fit properly.
Anyway, I now have JR TV working again (except for the 26 of 68 weirdo scan problem) which I know will eventually get resolved.
I REALLY want to use JR TV as my only TV as it has the best features of ANY TV software out there (I've tried almost all of them & none compare).