keyclone will edit the config.wtf file and save it for the last wow that logs out, so if it's one of your slaves and you have it capped at 5 fps, if you dont use keyclone to log back into the game to change it, it will stay at 5fps until you open keyclone, log into the game with a higher fps setting and close the game.

Ive also noticed what you are saying when i want to solo, it will be capped at 30 or 10 fps depending on which toon logged out last.