Mario 64 – Runs kind of smoothly with occasional lag spikes. Menu laggy but after it is playable.
GoldenEye 007 – Starts black screen
Mario Kart 64 – Very laggy startup and laggy menu. Sound oddities however games are not as laggy and are playable.
Banjo Kazooie – Title is quite a good framerate and a little laggy
Please post what version of mupen64plus you are using. Such as older binary newest source install or experimental etc. And any other settings mupen specific other than default or overclock other than standard turbo.