Someone could make a suggestion if we had some specs to works with, do this:
To help us help you would you please add your systems specs? Here's how: System Info - See Your System Specs Under System Manufacturer/Model Number add whether it is a desktop or laptop and whether self built. Log in to Seven Forums and you will be able to transfer the info directly to the specs page in your profile from within the System Info app.
After doing this your specs will be available in each of your posts. Click on My system Specs
in the lower left of this post to see how it should look.
Full instructions are in the tutorial.
Check for updates/patches for the game, check its minimum requirements, reinstall it. Look at its forum to see if others have the same issus.