How do I fix my "connection to the server timed out" error?

I've spent a month or so looking around online for a solution to the problem, but nothing I've tried has worked.

Basically the problem is that every now and then - anywhere from every 5 minutes to every 5 games - everything in the game will stop; ie people are running but staying in the same place, helicopter rotors are spinning but the vehicle isn't going anywhere, etc, then 5 seconds later the game will crash i and it will say "connection to the server timed out". I can always rejoin immediately, as if nothing happened, but it's pretty annoying

I've figured out that the problem is not because of my computer, because I've played many hours at other people's houses (I have a laptop so I can bring it) without disconnecting.

So far the possible fixes having to do with network/internet I've tried are:

Disable upnp (which was probably unnecessary because I have an Airport Extreme, which I believe doesn't have upnp anyway)

Port Forwarding the ports that EA says to forward (however I'm not sure if I'm doing it correctly - Apple makes any customization unnecessarily difficult and confusing)

Using DMZ - again, not sure if I'm doing it correctly

Obviously, this error is really annoying and if anyone has any idea how to fix this please let me know