How ACE COMBAT 8: WINGS OF THEVE runs on the Arc B580
Our estimate puts the Arc B580 at about 54 fps on High at 1080p in ACE COMBAT 8: WINGS OF THEVE, which means it runs acceptably. On Low the same card manages about 103 fps, and on Ultra about 39.
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 76 fps); 1440p: Low (about 74 fps); 4K: under 60 fps at every preset, best is 41 fps on Low.