Let me start off by saying I havent had any real connections issues.  My port are forwarded ect.  Also I dont have trouble playing the game online, no ingame lag (caused by me at least).

BUT when I join a custom game.  SOMETIMES, but not all the time, my ping will be up to 2k for about 1-4 seconds.  Then it goes down to what it normally.  No issues in game. 

This is irritating because some people will kick me right away.  I usualy try to explain to people that it will come down in a second, and It wont be an issue in game... But sometimes they just kick.

I am not sure why it is spiking.  It MAY be happening more when there are 5-9 people already in the lobby, but I have yet to take the time to positivly verify that.   I think it could be better to have it say "connecting" or something to that effect untill a person connects to everyone, rather than show ping right away.