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Well, i am wondering if anyone else has been running this game well on this platform.
Won't run out of box, nor with adjustments either by the games config or nglide config.
I also tried to swap nglide for dgvoodoo. Still no go.

Hmm, nGlide is DirectX 9 dependent so this might be the cause.
Don't know how to fix it though, you might want to pass it on to GOG support.
pretty green to the forum, would you mind giving me some pointers on how to do so?
Click on support on top of the page, then follow instructions.