I noticed that there was not a place to submit MP ILs. I asked for some clarification about the "100%" category in the main game's forum as its last sentence essentially implied that you could use a 2nd player for 100% runs (after prohibiting it except for 1-4). However, it might make more sense for an IL leaderboard specifically for multiplayer could be a possibility?

I have a question about this particular line: "You may not add a 2nd player in for any reason except for 100% runs."

At the beginning of the 100% category rules, it prohibits usage of a second controller except for specifically 1-4 but then later states you can use a second controller in 100% runs.

So how does this apply to Captain Toad ILs (or ILs in general) when in the 100% category, you are allowed to use a 2nd player? I am really confused by the last sentence of said rule.

Yeah, I'm also a little worried about submitting my times given the mods aren't necessarily as active (they are most likely involved with other things). Let me get in contact with some of them, though.

The FPS on PC is absolutely busted, I definitely agree. Not only does the FPS make the clear times a lot more quick but the collision detection is extra friendly (the higher the FPS), rendering certain strats a lot more consistent. You may consider playing the PC version if you want to contend with faster times, but you are not wasting your time trying on console! In fact, it's remarkable that console players are still trying to outperform a faster FPS. Keep doing what you're doing!