The only way I foresee this working and maintaining a good FPS rate, performance and to reduce lag, is to create a system that monitors the players numbers. I already have a system of checks to monitor enemy units numbers and to keep things withing the Gem engines comfort zone.

This what I propose, creating a system that looks at player numbers and only allows Ally Ai up to a certain limit. So in effect if you where to have lots of units on the map, the ally would have a few. If you where to only have a few units then the ally would spawn more units up to a limit. Keeping a healthy balance is key to optomal performance.

You may have noticed my minimalistic mapping style. This is to increase available computing resources to the mission scripting, rahter than focusing on the visuals.

If you guys have the time, it would be helpful to test it in it's current state and try to spawn as many units in as you can till performance is badly effected. Then try to get a count of your units on the map. This would be a great help in determining how to sript and implement an AI ally.

Thanks for all your support.