As far as i know, with the proper settings, dolphin is 100% deterministic. It doesn't matter if it runs at 60 fps, 5000 fps, or 1 frame per year, nor does any rng matter. I also know for a fact that when playing back movies, the ppc cycle count will always be exactly the same for each frame.
There are of course times still where playing over wifi would be preferred though, such as, as tueidj mentioned, where split screen would be undesired, or in case where you can have more than 4 players that way.
There are of course times still where playing over wifi would be preferred though, such as, as tueidj mentioned, where split screen would be undesired, or in case where you can have more than 4 players that way.