I don’t know, I run it on my Razer Laptop (I7-10875, 2080 Super Max-q, 4k display) at mostly Ultra 4k (but with Render Scaling at 80%) and get 29-32 fps through NYC (except flying low in central Park) and London with no stutters at all. The fans on it sounds like a jet, but it keeps up just fine. I can imagine it could to 3x1080 displays just fine, since that’s fewer pixels than a 4k monitor.
I’d expect a 3080 to do a bit better, although it would likely be CPU limited rather than GPU limited, which may cause more stuttering or so I’m told.