Anyone experience a problem like this and mind explaining what's happening/the solution?

I play an MMOFPS called Gotham City Impostors. Recently I moved to a new apartment and have a different internet provider.

This sounds crazy to me, but every time I open the game - I lose my internet connection. And I'm not talking about being unable to connect to the game (it's not firewalled or anything) - I mean my entire connection. It shuts it off for my roommates as well. And I've tested this out well over a dozen times. I've surfed the web just fine for an hour, two hours, three hours . . . just to make sure it's not coincidence. Ran speedtest to make sure it's not just a bad signal (I'm anywhere from 14-22 Mbps).

But I load up the game. Within a minute of being dropped into a match I lose connection to the server because my internet goes out. I get the "no internet access" warning triangle over my connection about half the time as well. Trying to open a webpage just says "sending request" until it times out. I exit out of the game, and within 1-3 minutes I have internet access again.

If it were simply unable to connect to the game I could make sense of it - - but since it seems to cut the signal to the router off completely I don't understand what's going on. If I hadn't been experimenting with it for the past couple days trying to rule out coincidence I'd think it was a joke.

Anyone have any clue what is happening and, if so, know of any solution? (I'm tempted to simply call up the ISP but I think I'd have a hard time explaining what exactly is happening . . . so, since it's not that big of a deal at the moment I'm just trying to figure out what's going on.)