Mesen Netplay cOntroller issues

Me and a friend recently began using Mesen Emulator for NES, and the netplay features on it are outright amazing, but whenever we join the other's server our controls get wonky, and the controller spams controls even on a single button press and we usually have turbo turned off, but it still spams, is there a way around it? our ping isn't high so I don't see that being the issue, and we never had the problem with ZSNES either, which seems to work about the same.

So in short I'm just looking for a way to make the controls more accurate for the person joining the server.