How Baldur's Gate 3 runs on the GeForce RTX 3080
Our estimate puts the GeForce RTX 3080 at about 142 fps on High at 1080p in Baldur's Gate 3, which means it runs comfortably. On Low the same card manages about 269 fps, and on Ultra about 102.
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: Ultra (about 102 fps); 1440p: Ultra (about 74 fps); 4K: Medium (about 79 fps).