I haven't been online much yet (12 matches in total, about 3 hours worth) I have been enjoying the singleplayer (which I think is very good despite what reviewrs have said)
I haven't experienced any lag in terms of jumping around, I did notice a couple of times when a lot was going on that my own character seemed to move a little slower than usual.
My last match however didn't connect properly, it took much much longer than usual doing the synchronising of the other players (usually it is about 2 second between each player, so 20-30 in total... this time it took almost the full 5 minutes the timer allows) Once it completed that and put me on the map I couldn't do anything at all, and the only output was the information screen showing who killed who seemed active.
I will be going on again today though so I will come back here and say if it happened again.
