Great, thanks!
UPD: At first I thought it worked, but it only helped with moving the nodes. Changing parameters raises the Tick too...
It's weird that it takes that long to serialize, my tree is big, but not huge (has like 100 nodes). Should I try and redo it into subtree logic instead? It really makes the editor impossible to work with, I am even thinking to revert the project back to the old BD.