How to use dGPU instead of iGPU in gaming mode UI?

Bazzite
1

My computer has a discrete NVIDIA GTX2080Ti GPU and a integrated Intel GPU.
It’s probably using the iGPU in gaming mode UI so the FPS is less than 20 in the UI which is very unsmooth. Whereas when I play games, the FPS is normal, >60FPS. Any ideas?

P.S: It’s the latest bazzite-deck-nvidia.

Thanks.

2

Any one can help? This issue is annoying