This is a new version of the n-64 emulator by StrmnNrmn
Mario Kart 64's framerate is still 11.48, isn't really playable but its getting better and it also depends on the game on its framskip

Change log:

[+] Added over 50 new combiner modes
[+] Added support for c-buttons
[+] Load roms from ms0:\N64 in addition to local roms directory
[!] Fixed backface culling issues
[!] Correctly implemented flipping to avoid flickering with certain roms
[!] Plugged memory leak in texture handling code, fixing various crashes
[!] Fixed issue which caused screenshot function to hang the emulator

check more out here
or you can download it here

this is nice ..keep up the good work..i really want a fully fuctioning N64 emulator....

Wow, it would be nice to have this fully working...When I was younger my friends and I would stay up all night playing the n64 mario kart, and 007 golden eye!