I don't understand why are you still posting - Dktapps already explained the cause. I was trying to help figure out whether you could improve your situation, but you clearly don't want any more help.
That is the cause. But the batched packets still haven't been fixed. I would appreciate much more if I were the guy who barely touched pmmp with no code knowledge and github experience. If I were that guy, the problem has not been ---improved---. This "Help" section is for everyone. Bonus: If that is the cause, why change port and resetting the network compressing level from 2 to 7 anyway? EDIT: I just realize the batched packets problem is Mojang's changes. So I just handled the 2-tick-InteractPacket bug from Mojang.