I recommend joining the banjo discord linked on this page as you will get more responses much faster. But basically you want something called a capture card, a splitter, and RCA cables.
I recommend you join the discord linked on this page to get more answers as that's where the conversations about BK happen.
on Xbox loading zones are instant and there is no lag. Yes you lose a ton of time to text and some glitches don't work but when balanced out N64 and Xbox are very close in timing for 100%.
we have a 101% glitchless route that you can submit to its own separate leaarboards (the memerboards) or you can also submit it to speedrun.com as well. All of the speedrun routes for the categories include a significant amount of glitching/clipping however
Both consoles are fine for running this game but the Wii U version is faster for all categories, however a lot of people prefer running on N64 for various reasons. I'm assuming your Wii U is PAL as well and unfortunately PAL is not very good for running this game. You can still do it just the route you will be doing will be different from what everyone else does as some tricks are patched. It is recommended to have a NTSC N64 or Wii U but you. Others can elaborate further if they want but if you need help or do not know what route to use you can always ask in the discord as you are more likely to get a response there.
Emulators run too differently from the official releases of the game to be acceptable on the leaderboards, that's it.
how would it waste time if the fadeout at 55s happens at the same time regardless? But yeah you have to inspect files i had that issue as well.