Here's a suggestion. Please reduce the number of ht spawned to 2 to reduce lag. You do realize that not everyone can afford a very good computer right? Why do you make it to 3 or 4? Don't see what fun is there. I prefer a single ht and have to kill every part to kill the whole thing. That's even better than lagging everyone up.
These sentences "If your comp can't handle it, then don't go" or "If your comp can't handle it, get a better comp" is not a good excuse for not considering this suggestion.
So please consider this suggestion.