Here's how I got my Mario Party 3 to work:
Put in a zip file. Unfortunately, recalbox does not liked zipped files in N64 titles for some reason. You'll have to manually put the file into your pi in the roms/n64 folder.
Next, go into the xml file that's in your n64 folder. Change the directory of the path for your Mario Party 3 file (for example, if it was Mario Party 3.z64, make it Mario Party 3.zip). It still won't pop up on your manager, but now the zipped file will show on your pi.
Now, go into the emulation settings on your pi for the Mario Party 3 settings. Select the retroarch/libretro option, and don't leave the core on default (even if there's only one option for libertro, for some reason it will not run on default)
That should work. Retroarch plays Mario Party 3 at a much lower resolution, which makes it stable enough to play. Increasing the resolution will cause issues, including the characters popping back out of place. This method works for most roms that aren't normally supported. Hope this helps!