How to fix a slow P64?

New to emulation,just DL'ed Project64. And it seems somewhat slow. It runs (mario Tennis),but at a slow rate. How do I fix this?

Nvidia GeForce2 MX/MX 400 (just got the newest drivers)
AMD Athlon 1800+
Windows XP

anything would help,thanks guys

Mario Tennis it's not perfectly emulated, perhaps this setings help, from the Project 64 Game FAQ:

video
replays are messed up
FNB: shadows - enable Force Normal Blending
FDE: players - enable Force Depth Compare

Click to expand...

Also try lower resolutions and color depth. Rice Video plugin it's more accurate on this games, but also slower.

Thanks a lot for answering,how do I do enable those things? Should my specs handle all this?

To enable that settings: "Options" -> "Configure graphics plugin" -> uncheck "Hide advenced options" -> click "advanced" tab.

Your specs should be enough with most advanced settings