A commonly brought up topic, but, just wondering if anybody's nailed it yet? I've managed to find the best settings, and documented it.
Default settings on Mupen64/Mupen64plus/Project64 1.7 - jumpy when the game starts for about a minute; at regular intervals sound is reproduced near-accurately for about 20 seconds, then becomes overly jumpy again.
Using Azimer's Audio 0.30 (Old Driver) or zilmar's audio plugin with the minimum audio buffer, essentially the reverse happens; sound starts out properly, becomes garbled after about a minute for about 20 seconds, then re-fixes itself. Overall, more time is spent with near-accurate audio than with the larger audio buffer (Jabo's Dsound, etc.)
As far as I can tell, what is needed is an audio plugin with an automatically re-adjusting buffer (seems pretty farfetched I know, lol). Just an observation.
Other Boss games, such as World Driver Championship and Stunt Racer 64 also require the small audio buffer setting, but the audio remains constant at all times. I can't get Twisted Edge to reproduce any sound at all.
WDC and SR64 do not boot with many audio plugins either, whereas Top Gear Rally boots with anything (other than hanging when audio sync is enabled on Azimer plugins). Twisted Edge will crash emulators quite easily, the various settings required for boot are specific.
Thanks for reading!