Trust me on this one lol. When you play 30fps games or below a lot 60fps is a godsend. :P I know for sure because when I watch F-Zero GX on youtube and then play it personally the difference is amazing and the experience enhances in a way lol.
My brother got the game early and he let me mess around a bit to answer the question everyone is waiting for.
Framerate judging tiiiiiiiiiiiiiiiiiiiiiimeeeee
In the overworld, pretty smooth 30fps. I'm satisfied. Feels more like R/B/G/S in this since there's no significant drops like in the gen 4 games which is good.
Skating around a bit though I noticed some drops. It gets pretty bad when you skate faster, so I know what to avoid.
In battle, the 3D frame rate is TERRIBLE. I'm talking stuff like 10fps. Now I see why they disabled 3D in the overworld, they didn't wanna set up themselves for an embarrassment.
In 2D, idle animation are fine, and smooth. Battle scene kicks in and you get noticeable drops.
Overall, better than I expected. Satisfactory at most. Good job, but not so good with the 3D game freak.
Oh, I did notice another huge problem....those god damn jaggies. Jesus christ.