[Lokean]

You'd have to check with one of the more technically proficient Dom3 players, but I believe there's command line switches that reduce the rendering for battles, which might make it tolerable...

EDIT

Yeah, try starting it with -xxx as a switch. It makes the game hideously ugly, but it speeds up battles. Other switches that might speed up battles are:

--nolightfx
--partamount 1
--renderpath 0

But I'm not sure if they're included in the general graphics quality switch.