The game does not have issues running at 60fps or even 100fps in non-RT mode though
RT mode is exponentially more demanding on PC with the addition of better RTXGI and Shadow and Reflections which are not available on consoles.
And the console is already struggling here. 23fps at 1080p in Novigrad and targetting 1440p elsewhere in RT mode with half the RT features and cut back visual settings from the PC version. They're doing as poorly as expected in RT, which DF has called game changing and transformative