Hello,
 
Here some ideas how to support low end PCs:
 
1. Offer a super-low-quality sound system for low end PCs, I suspect current sound system might be a bit CPU expensive.
 
2. Offer reduced 3D models for tanks, they seem way to detailed.
 
3. Offer reduced 3D models for infantry, they also might be slightly to detailed.
 
4. Switch to simpler 3D models when view is zoomed out.
 
Idea 1 is CPU reduction idea, after 3 are GPU reduction ideas.
 
(I am not sure what part of my system is causing the lagging... game seems to use 2 threads and cpu near 90 to 100% busy... not sure what gpu usage is )
 
All reduction ideas are probably welcome 

Bye,
 Skybuck.