Connection loss without system crash

So I bought this game on Steam for a friend and I, and between 5-10 minutes of gameplay, we lose connection with one another…the game still plays, but bots and other players are frozen/glitching in place during the last moments of their last animation cycle. We are on a Cable line through Comcast. The connection issue happens when either of us host, and it’s gotten to a point where the game is nigh unplayable when I have to shut down the game and restart it in order to get back into the session with my friend and trek clear across the island back to where I got DC’d.

I have allowed the game through the firewalls, and tried it with low-end settings.

I’m not getting a crash error or anything, it’s like it still thinks it’s connected, but is not, so doesn’t crash to desktop or main menu.