When i cut down a big tree i got lag spikes and the server tps drops from 20 to 17, and the trees doesn't fall down (i have to cut the tree block by block with lag spikes and the server almost crashes)

mostly the lag happened with 3x3 trees

Im sorry about this, i will try to optimize performance for future updates.

Sorry i closed it by accident.

Same here. Friend running a LAN server, and it takes forever to calculate your basic tree. As it stands, it's simply easier to use an excavation mod instead, as cutting a tree takes ~5s (more obviously, if bigger), then the falling animation.