I've just upgraded my graphics card to Hercules' AIW 9800 SE. Softmoded with some artifacts - still working on it (but that's something for a different string).

I played Homeworld 2 and X2 the Threat on my previous card (Creative's Ti 4200 64MB) with no problems. Once I installed the 9800SE (even before softmodding) I started to get "hiccup" effects in the trailer scenes - there are very short but quite visible pauses.

Has anyone seen anything like that? What could be the cure?

Some details:

MSI-648 Max mobo
Latest SiS AGP drivers installed
P4 @2.8Mhz
nothing overclocked