"technically", it is, but it won't because of the architecture mostly.
I wanna bet my shirt that some part of the stuff is even "emulated" i have really big doubts about the grass for the instance... that shit seems naturaly handled by the WiiU no big problems with that,
like on the begining of the game, you have quite some grass around the "old man", Switch have really troubles there...
, it's always when there is a quite amount of grass that the game have a little freezes or drops like a microsecond.
This sounds to me like a lag in the computing of something that is not meant to be processed "that way".
Not really, thats why the game is not in 1080p on WiiU but smash bros is. The game a really fast amount of process and let free some parts because they can't be seen, so the game is constantly loading in a race, they use quite some shaders effect with light also and with the FXs on the pods, and there can be 10 pods at the same time... thats a lot with a good fidelity like that.