Running the game with CoreTemp open shows the temperature under load from Dolphin.
Also, make sure your computer is in high performance mode under power management, your graphics card is set to high performance under Nvidia Control panel, and that you have everything up to date: windows updates, drivers, directx web updater, and visual c++
Also, make sure your computer is in high performance mode under power management, your graphics card is set to high performance under Nvidia Control panel, and that you have everything up to date: windows updates, drivers, directx web updater, and visual c++