I'm trying to setup my MCE2005 box with a Twinhan DTV ATSC Hybrid HDTV PCI card. (PV3250).... I've downloaded the latest BDA drivers from twinhan.com which are v1.2.3.6, and MCE is able to discover the card- and receive HDTV... but its playback is very choppy, jerky, stutter, whatever you call it... NOT SMOOTH.

My PC is an XP3200+, 1gb DDR400 ram, GF6600 256mb AGP and 160gb HD. More than exceeds the minimums.

I get adequate signal strength... 4 of 6 bars, and sometimes 6 of 6 bars on certain channels... Same antenna delivers perfect HDTV to my TV's internal tuners.

Can anyone offer me any advice? I'm at my wits end.