This could be a tricky one, or just some simple setting overlooked.
Therefore a few checkup’s.
- Is your Asus GTX Strix 1660TI recognized as your main GPU? Worth checking because some Motherboards (mine) tend to change to the internal / on-board GPU as primary GPU after changing- or adding new hardware. This must then be changed in the BIOS.
- Do you run other games in which you can check or your correct GPU is detected / used?
- Could you provide us with your HW settings, and Nvidia settings?
Hope you’ll be back up there asap