If I remember correctly, totem tribe 2 doesn't use the graphic card at all and even use only 1 core of the cpu. If it did it would improve performance a lot for towns with lot of buildings and units, is it planned to change ?
It does use graphics card, but it's still mostly CPU-heavy and yes, it's single-threaded. No, this is not planned to change in the nearby future. Performance of the game is a separate issue and not dependent on these tech details. If you have performance problems inside town, bump the appropriate old thread.