Just found both of these posts over on the official total war forums. Not sure if this has already been posted somewhere here among the TWC, however, I have yet to see it & if I haven't then there are probably those who haven't seen it either. So here you go & hopefully this helps smooth things out if not a little bit than before.
Nvidia & ATI Graphics
Spoiler Alert, click show to read:
AMD Graphics
Spoiler Alert, click show to read:
Cheers!