I never had any problems with
mm on the n64 - I think it has to do with battery for some people and others have the infamous glitch
Then again - I remember
mm as being purely eeprom
I had a plethora of problems when it came to the NGC port - woah - like talk about buggy
In my opinion
mm is the best 3d zelda to have ever graced a console thus far - please give it another shot for me - I wish you were there when Zelda 64 was the pinnacle of gaming - too many distraction for the average gamer nowadays
good luck friend - enjoy it for me