So with the max completion % now being 109 with the DLC, how would that affect the 100% category? Like could you do some of the DLC  and skip out on some of the base game to still get 100%? Or would 109% be a separate category and 100% had to be ran on a pre-DLC version.

Unfortunately, no.
That is called a spliced run, and moderators should never accept those kind of runs.

From your perspective you might did everything fine,
but think about the moderators perspective - they have a run with a minute missing in the middle, and they have no way to know what happened during that minute. Perhaps you played normally, perhaps you activated a cheat code or something, or perhaps you did combine two different runs (The splits are meaningless here because Livesplit is an external program to the game).

I've studied martial arts/boxing my whole life so a lot of my focus has come from that. Just a lot of discipline, there are days where I don't feel like I have the motivation to play games but I do so out of discipline and works for me every time. It's also enhanced my hand eye coordination and reflexes to high levels I also smoke a lot while I play my games so I suppose that adds to it but I don't recommend smoking cigarettes as its bad for your health. I know this sounds sort of contradictory with my life style but I do it because I want to do it. Good luck on your runs! Theres nothing that you can't do when you put your mind to it.

Speedrunning

Aeterna Noctis

DLC and 100%

What do you do to stay focus on runs?

Will a run still count if there's a minute cut out in the middle?

Symystery

m2p9l8p5

Pear

Gaming_64

Bomberman Hero

Super Ghouls 'n Ghosts

BLACKHOLE

Dandara

Virtual Pool 64

Carrion

Morkredd

Eden Genesis

HOAP