Hi-res two-screen playback

[Andy Millns]

Hello,

I am looking for advice on hi-res video playback using BSPlayer across two screens (for stereoscopic video playback). Does anyone have any advice on codec and hardware choice for playing back at the following spec:

25fps
2048 x 576 resolution video (widescreen aspect, 1024 x 576 on each monitor)
Surround Sound - AC3 or equiv.

I have had some luck with 3vix at lower resolutions but it seems to be a bit hit and miss, with frames being dropped. With 3vix and DivX does the bottleneck for hi-res generally occur at the processor or the graphics card? What can I do to improve performance?

Sorry if these questions are a bit out of the remit of this group.

Thanks.