You can change the number of cores TG will use in one of 2 places, depending on whether you want it to be permanent, or scene-dependent. To change it permanently, so that all new/default scenes will use the chosen number of cores, go to Edit->Preferences->Startup and turn on Override Automatic Number of Cores Detection. To change it just for a given renderer, go to the Advanced tab of your Renderer and set Minimum Threads appropriately. Keep in mind that if you have more than 4 threads you might not get any notable speed increase by using more than 4.
- Oshyan