You need to put 2hours++ for servers cuz nolifers+high donators ruin servers.
5-10 no lifer is okay but too many of them cauze make very big cap with you even you join any event you face up with them, so gap between players too much so you lose your motivation after you spend 2-3 days with family

i went to rank 3 to rank 400 in 2 days

so this private servers want you to be nolifer or high donor. you cant get fun with your +7 set +8 weapon cuz everyone push so hard that you cant find your equal players to get fun