not many problems really (ps3). I have seen some guys lagging, but a majority of guys are strait.
It does take time to find a group to roll with because of how jobs are created, and the limited number of people in the open play session. This leads one to join quick jobs to find action.
Then with time intrest fades in the group you have to go back to the open play and redo the quick join to rally a large group again. the three quick join options separate the individuals by intrest tho everyone eventually wants something fresh and different. The voting on the next job is a fun feature to keep the group going, and it is almost necessary considering how jobs are put together. A good "crew" could alleviate the time and stress of keeping a good group together.
Im sure with time the cheats, hacks, and all stars will have there way. but as for now its a blast.
Top fun three has the f-16s chasing down red bull racer planes. its quite fun.