Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Technical Issues Framerate drops as time goes by - game unplayable

helo mformule,and everything those who will read this topic.
This game is realy great but ,since i have him to buy the problem is the frame per second.Whatever the parameters that i put in the game , the frame per second stil low.

I have a : AMD Radeon Hd 7670M
My display is on 1600*900 (32 bit) (60hz)
i7-3630QM
Windows 8.1 64bits
The memory is 8 Gb RAM
i hope to find some help here, because the game is very awesome.

Thank you.