massive performance hit for stereo mode

[Matt]

Firstly, I know you can expect a performance hit when you go from single to stereoscopic (head mounted display) mode - but what we are seeing well beyond what would be expected.

We are running an Dell Workstation 650 (Xeon 2.something + Nvidia Quardo4 960GL - I think).

I know that you can turn over screen-spanning duties to the graphics hardware instead of windows doing it, however, I cannot make this work at all.

So I think it is the fact that windows is doing screen spanning that is killing performance, but I don't know how to fix it.

I am running XP home and I have tried the original nvidia driver, the latest nvidia drivers and the ones recommended in the vizard documentation and I can't make any of them work. Any ideas???


Cheers,

Matt