Got it!

About 50 sec lost on final event . Saving roughly 2 seconds in loads per event vs. previous world record, adding up to roughly 50 sec. Currently removed most content from Wii U, put rest, including Smash 4 onto a flash drive (Sandisk, 32gb, Ultra USB) plugged into front USB slot to maximize loading efficiency.

Shout out to hash_brownz and EZscape for coming up with some crazy optimizations, and really streamlining the run.