Not really understanding how the XP system works, since it clearly doesnt work on damage done or ships sunk or anything obvious, Ive noticed that my XP on my nelly has dropped by 1/4 to 1/3

Prior to this terrible patch I was averaging, with premium, just over 4 k per game for a win. Now its around 3k for a win.

Is this due to players just not using bbs now? no thanks to those who have complained about them so much...