So I have a terrain with sections of water in it. I just placed a whole bunch of trees in the scene with mass place. However, it spawned trees in the water which I obviously want to remove. But when I remove the trees, there a delay of a couple of seconds before it actually deletes them. This is so incredibly frustrating because my map is 8km x 8km so for me to have to go around every area of water and cliff and click, wait a few seconds and move on is going to take all day. Why can't I just click and drag without lag?