Stuck in endless loadingscreen AFTER one round of playing.

I spent hours searching for a solution today.. I also have a D-link router. The first thing I tried was opening/ forward the ports that xbox live and Titanfall recommended. (This did not help) the second thing I did was enable DMZ in the router settings. After I changed this setting i had no more problems. I could finally load the campaign and play consecutive matches without getting stuck at a loading screen.