(03-17-2020, 04:55 PM)mbc07 Wrote: Most (if not all) GameCube and Wii games have the game speed tied to the FPS. That means that if the FPS drops below 60 (or 30 if it's a 30 FPS game) the actual game speed will slow down too and audio will also start cutting out (unless you enable audio stretching). PS4 and most current games, however, doesn't have the game speed tied to FPS, so the FPS can drop without making the game go slower.
Now to the actual troubleshooting: how exactly are you selecting the NVIDIA GPU? The correct way to do it is to go to the NVIDIA Control Panel, locate Dolphin profile on the list (or add a new profile) and select "Prefer NVIDIA GPU". Don't leave it on Auto Select and don't try to select the GPU from Dolphin. Does it still run slow? If yes, try monitoring your CPU and GPU temperatures to make sure you're not thermal throttling due overheating...
I did exactly like this.
I have checked both temps before the CPU swap and upgrade some days ago with an Aida64 stress test. Both the CPUs, that have the same tpd don't get past 88 in Aida (81 in game) and the GPUs don't get past 71. But these are laptops, I think this has to be expected.
No throtthle, according to Aida64.