I've been running solo events (no co-op), and I've noticed that in comparison to the current WR, my game is loading roughly 1 sec. slower than the WR video is. I've already switched from disc to download, which, if there is any difference, I can't tell. I'm going to try deleting everything except for Smash off my Wii U tonight and see if that changes anything.

Does anyone have any other ideas on how to speed up these load times?

Figured it out, if you remove everything from the Wii U and put it on a flash drive, it saves a second on the load time