Donkey Kong is jittery, the picture keeps on skipping

[benjikj]

hey, i've just recently got donkey kong on the project 64 1.6, at first it came up with access violation but i went on settings and changed the video (graphics) plugin to 'Jabo's Direct3D6 1.5.2' to stop the access violation. But then after that when i played the game it was jittery and the picture kept on skipping and changing. Any suggestions??
thanks...