Well, I was having framerate drops in some stages, so I went and deactivated shadows to avoid that. I accidentally used the Any filter search for online matches and it didn't crash! I asked a friend who is in the Latin America DoA group as well to try it out and it worked for him too! Everyone should try this, hope it works for everyone! Just toggle shadows off!

I'm posting this in the groups I can post it (spanish/english speaking) So everyone can play with the "Any" filter for solo matches again and we can get the online active!