Not really, no. Several things may be happening 1) Lobby leader restrictions 2)Router ports - I guess sometimes that helps 3) Team Ninja needs to work the network code glitches out 4) If you're using a single-band router it will significantly limit you like that -- not saying you have one.
Are there any other issues though? Are you able to do ranked okay?
Are there any other issues though? Are you able to do ranked okay?