So to elaborate on what happened to me, I decided to flatten a large area of land in my world to make a nice village in wanting to go with the whole theme of the game. Many hours later I had flattened what looked like a 150x250 square footprint. However, now due to this land flattening everytime someone renders the area that I flattened they are dealing with desync, lag, freezing, just about everything until the ground both renders itself and then de-renders the fact that it has been removed. I have screenshots of the ground doing both of these things in front of me which is causing the issues. I just feel if land has been already remove it should not be being rendered to then be de-rendered again, it causes a lot of stress on a world/server.