Have you tried using the bat files in the main directory to see if you can get better performance? Older cards have issues with the number of assets we have on screen (something we will be fixing mind you). It's not optimized for older machines.
No, tbh quite new when it comes to pcs, but if you're working on better performance for older cards, either I'll get enough money to upgrade, or the update will be out.
Either way, I'm still playing this game, thanks for the help though