Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Technical Issues PS4 "connection with server timed out"

I've been playing online with my bro which sometimes works fine for several hours then sometimes will randomly kick me out with "connection to server has timed out". Sometimes it also says connection to PSN lost even though it was not actually lost since we are chatting in a party with no interuption with friendlist & psn menus still responsive.

Here are some stats:
We play many other multiplayer games with no issues
both our routers have UPNP enabled, both NAT type 2
For shits and giggles, I put my PS4 in DMZ (NAT type 1) and experienced less disconnects but it still happened twice within about 3 hours.
Prior to messing with dmz I used port triggering for 23252 through whatever the other numbers were mentioned in a previous thread. No change.
I attempted to host the game instead of my bro and he was disconnected after about 3 minutes of play on a brand new game. His PS4 is also in dmz with tomato firmware claiming that his ps4 is requesting ports somewhere around 55000 through 65500.

Is this problem related to the similar xbox problem people are having? I read that the xbox problem is not letting people connect at all though whereas in this case I can connect but get disconnected shortly thereafter.

Any ideas would be appreciated. Also would appreciate confirmation of which ports this game requires (UDP and TCP) since the game doesn't seem to support UPNP.

Thanks