I have a relatively fast PC and GPU (Pentium D Dual Core @ 3.7 Ghz each core/ 2 GB Kingston HyperX RAM, Nvidia 7950GTOC GPU w/ 512 MB DDR3 RAM).... yet, I'm unable to get a *watchable* video rendered @ 1080i in any format!

It does the rendering without any errors, in any format/resolution (although it takes a LONG time, even with my computer, for a high res 1080i render), but no matter what, the outputted video comes out VERY choppy, and pretty much unwatchable on ANYthing over 720p.

Is this a known problem with PSP 11? Is there anything I can try to attempt to remedy this?
I don't think it's a Window Media Player 11, or Vista problem, because I've downloaded some pretty impressive video samples here that were rendered in 1080i, and they play completely smooth on WMP11.

I'm using Vista Ultimate by the way...


Thanks in advance for the help.