How Red Dead Redemption 2 runs on the GeForce GTX 1660 Super
Our estimate puts the GeForce GTX 1660 Super at about 48 fps on High at 1080p in Red Dead Redemption 2, which means it runs acceptably. On Low the same card manages about 92 fps, and on Ultra about 35.
The graphics card is the limit here, so lowering the resolution or the quality preset is what raises your frame rate.
For a steady 60 fps, our estimate says: 1080p: Medium (about 68 fps); 1440p: Low (about 66 fps); 4K: under 60 fps at every preset, best is 37 fps on Low.