I've been using Snes9x,among other windows based emulators (WGens, Dgen, System 16 emulator directx ver. ...) (with free roms, not illegal ones ), and I've found out they perform awfully in windows 2000. In Fullscreen mode, I get same FPS than in windows 98. But screen looks blocky (in windows 98 there is a kind of iamge interpolation with softens image blocks, and it's not FSAA)-
 
In windowed mode, snes9x runs fine, unless I try to resize snes9x window. After that, performance drops a lot, and from 40 FPS i get 18 FPS.
 
I've read in sys16emu file that riva tnt cards use a special feature, called "glint", which allows window-resizing without perfomance-loss.
 
Since I'm using the same generic drivers (5.30) in both OS, I would like to know wether it is a specific windows 2000 issue, a directx 7, or my card. Does SP1 fix that?0
 
My specs:
-Asus p5a (bios 1010 beta 002)
-128 MB ram
-riva tnt 16 MB
-HD 6,4 GB
-Windows 2000 pro (5.0.2195)
(Due to stability issues, k6 write allocate and EXTERNAL CACHE are disabled in my bios)