The log shows that the game is currently running using the discrete Intel GPU and not the NVidia GPU, which means the game is not correctly being given the more powerful GPU. The notification is working correctly.

I can't reproduce this.

Thanks for running all these tests mate - This is a rare case for us so we've got to cover all the bases. Now that we're more or less confident that you don't have a hardware issue the next best thing we can look at is drivers. Could you please ensure that your GPU drivers are up to date?

Further to that, we're releasing a new hotfix patch by the end of this week. It may cover your issue here.

One test you're not covering is what happens when both CPU and GPU are under load - Try running Prime95 and Furmark at the same time.