Larian Studios Forums Divinity - Original Sin Divinity - Original Sin - Technical Issues Game use only one core?

It looks like it.

I guess my FPS will be better when my CPU will use all cores = GPU will work faster.
100% for one CPU core and about 70% for GPU it is slow.

But i am surprised why this problem is in released game? They did not find it in testing?
Now we will have to wait until they find this bug and repair it. If it is possible and that can take long time. This is technical problem and those are difficult to solve.