This is me too. One round top of the score board, next round the bottom. Same lobby. Usually the only thing that changes is the map. If we're on pantheon I'm garbage. Switch to exodus blue or frontier and I'm a contender again. It also depends on of in doing weapon bounties. I'm significantly better with a scout or pulse rifle than I am a hand cannon or auto rifle. Even so I still have great games with autos and hand cannons.