I have a dedicated GPU (AMD Radeon RX 7900 XTX) and my iGPU. When I start a game (tested on Starfield, Multiversus, Genshin Impact, Wuthering Waves and some more) It gets stuck instantly and I can't close it (Windows shows the "... is not responding" thingy and when I close it, it closes the window but Steam/Epic still says its running.
When I Start the game with just my dedicated GPU active (deactivated the iGPU in the device manager) It will start but run on an extremely low framerate (2-3), my mouse inputs are delayed and everything is extremely slow but my GPU usage is only a few % as well as CPU and RAM. When I reactivate the iGPU while the game is running my Framerate is perfectly fine in Most games (Starfield just crashed) and Task Manager shows that Both are used. Terraria was just fine and started even with both GPUs active and also using both.
In my graphics settings I set the AMD Radeon RX 7900 XTX as the GPU for all these games.
My PCs specs:
B650 GAMING X AX V2
AMD Ryzen 9 7950X3D 16-Core
AMD Radeon RX 7900 XTX
64 GB DDR5
