Currently leaf piles spawning, moving and getting destroyed are the main source of lag on my server.

If there's any information you might need that could help feel free to ask me!

(Server is a slightly modified Valhelsia: Enchanced Vanilla instance)

there is no reason that leaf piles should be creating any amount of lag, we cant do anything without more information

I mean when leaf blocks are turned into leaf piles, fall and pile up on the ground. The first level (just a few leaves) doesn't lag but as they pile up more then it starts slowing down.

do you mean leaf piles or falling leaf piles?