I do not know about the technical stuff but if it is possible to only spawn AI in 4 or 5 km radius of the player maybe that helps it! For distances more than that you can issue a value to each unit and when they fight each other the side with the highest value wins! And the other side retreats! Both sides also lose some units! This can actually make it less FPS demanding I think! Forgive me for telling you how to do your job but I am really interested in this WLA! It has real potential I believe!