Topic: can you fix Mario kart 64 multiplayer on switch (on same switch)

In mario kart 64 original game on nintendo 64, the multiplayer was unplayable at 3-4 players, the game was lagging so much ( i dont know the term but its was jerky ). its would be nice they fix that on switch so we can play multiplayer with friend in real life on the same switch without the latency.

I wouldn't count on it. Nintendo for the most part doesn't really make changes regarding game performance when it comes to re-releasing their older games.

I notice another problem with MK64 multiplayer is that's no music if there's 4 players at once. I don't think Nintendo will fix that either.

You're not going to get higher framerates via emulation. Games of this era in particular have the game speed tied to the framerate and usually the target framerate was around 15-20fps. If you allow the game to run above that framerate in an emulator the game itself will run faster. It's theoretically possible to mod the ROM to increase the gamespeed but modding could in theory break other things and the goal of this service is authenticity so I doubt they'll do that

Higher render resolutions on the other hand, much easier