As I posted in another thread referring to this one...
I can affirm that this is definitely an issue. I am running on a 3630QM intel chip and the game auto allocates to the first core for the bulk of the load and then never goes above 18% while hardly using the other cores at all. I ran the support tool and the application told me that my CPU failed the test? My 3630QM CPU is clocked at 2.4 GHz and it is an i7. It has a turbo boost feature that auto-overclocks to 3.4 GHz. And the tool is telling me that it failed? I think not Larian. This issue needs to be fixed. My CPU is more than capable of handling this game but I cannot maintain even a frame rate above 40 at 720p. Something is definitely up with the optimization.