I looked for a post about this but didnt find one, anyways i just learned about this so ill get right to the point. Open up the ImpulseNow program and go to the "Community" Tab found at the top, now at the bottom there is a tab called "Games" and then there should be a ton of custome games you can see. Just double click on one you are interested in joining and the game will launch and take you right to the hosted game. It connected pretty fast for me, I also see like 100 more games on here then i do in the in-game custome game search function.

It shows you the country that game is hosted in, the game type, the map, the host,  how many players there are, if the game is full or waiting for players, and the host version of the game.  Happy gaming