Emulord:could be a cheats bug.Disable them one by one and test to found out which(or if) cheat could cause the problem
Sheik:use 21xx drivers which dont have either the naryu's love bug nor the tresure chest effect bug
Feedback for long pauses issue:
Bomberman Hero(U) ok
Castlevania (U) (V1.1) ok
Diddy Kong Racing (U) (V1.1) ok
Goldeneye(U) ok
Zelda 1 v1.0, 2(U) ok
Mace-The Dark Age (U) ok
Mario Kart 64 (U) : Yep i got some long pauses with this one but not very often(1-2 pauses per race)
Setting the game to protect memory solves the issue

Pokemon Stadium 1,2 (U): ok
Star Fox 64 (U): Getting some large pauses too(~10sec) and sometimes they cause the emu to lock up
Btw the sound is terrible at the 3rd level with jabo's sound plugin
Super Mario 64 (U): ok
Wave Race 64(U) (V1.0): ok