Needs improvements

Seems with more updates the game is getting worse. There seems to be a lag when shooting enemies  way too many times especially with escalation or the more players involved. Mastery weapons and having to empty entire clips in order to complete the task. I'm inside a building and somehow getting shot. Low level players are able to one shot me with a SMG at 80 meters. Needs fixed. Blowing up tanks x3  as indicated by the game and then getting 5k points is ridiculous.