Hi Reaper we discussed this out few weeks ago. And I decided to let 3rd person on because almost nobody is C4 camping in clanbattles however you can use it to verify which uniform you have and some guys are playing R6 and RS only in 3rd person like Bander. Live with it and at all I don't think that you have a huge disadvantage if someone is playing in 3rd person.
Take a look at this thread ->
3rd in cbs!?