thanks, of course, it is also under development, I'm just cutting up my spaghetti, and making it much more modular, then I'll be able to decrease loop quantity as it was recommended by others too. only group and map updates are optimized.
I simply had no enough time for it because of my job, and had only time to play with some graphics performance optimization solutions (few-minute-long modifications and tests).
moreover, I also have to redesign my entity and database structure to be more flexible, which is still in brainstorming phase. the current system is a bit rigid and okay only for a simple RTS battle game, not for an age of empires 2 like RTS.