From a performance and overall compatibility perspective, does either GNOME or KDE outshine over the other for this?
Not unless you are doing specific things. Last I checked, but I know Gnome is moving on these fronts too. Things like HDR, VRR, Virtual Reality Games and stuff like that you are going to want KDE for. There was probably some other stuff, but that’s what I have off the top of my head. However, if you try Gnome and decide that you really like them. They are making moves on those fronts too, but I’m not sure how long it is going to take.