Garbage Collection and Skipped Turns

Yes. However anything that you are creating during a function and keeping hold of for a few frames and then releasing is going to be allocating on the stack. Stuff like "Wave" objects, "Bullet" objects or whatever else you use in your bot will cause GC stalls if you create lots, use for a while and then null. This is where the pooling comes into force. I would definitely recommend pooling objects such as waves etc if you are having trouble with stalls and then go from there.

-wolfman