I used to have a S*** load of problems with my games connection issues but luckily i managed to fix it. By enabling my UPnP in my router settings and restarting it afterwards, my Nat type went from strict to Open and this got rid of 95% of my connection problems. My game rarely quits a match now, and the matchmaking time it took to get in a match went from minutes to seconds now. For all those people facing strict nat type issues i recommend using this method until they decide to change from PvP servers. PvP servers require UPnP to be enabled or else you will have a strict Nat type 99% of the time.