Not really sure if this is an exploit but it does give you an edge over other players.
Basically when your in a bg before the timer runs out everyone starts running at the gate/barrier
Well I found out if you run at the barrier and spam space/jump almost every time you kind of fly out the gate faster than everyone else.
There by giving you a lead to the first flag/objectives
Tried looking for this but couldn't find it anywhere
Hope this helps a few people out