Lozjam
A Cool, Cool Mountain
Nope, you aren't insane nor are you making it up. Zelda on Switch didn't have any frame drops while the Wii U version did. This is apparent when you count the frames and see each individual frame.I noticed it when there was an explosion on screen. I may be insane and making it up, but since a lot of people saw it too, I doubt it—unless we're all insane. On the Wii U version we've seen, there has been a slight, but noticeable, framerate drop during explosions on screen.
However, that did not happen on this version at all. That's what I'm basing my comments on.