I play many of games on console but I play way more on pc. I own portal on xbox one and was wondering; besides aim is there anything I'm hurting myself time wise? I plan on running Glitchless fyi. Also, I know it isn't likely but has someone made a code or something to allow plug and play for it?

at the end of the day, play with whatever input method you enjoy more.

however, if you want anything close to a competitive time, it is essential to play on kb+mouse.

you're right in the idea that the aim is slower on controller, however you need to realize that aim is the biggest part of the portal speedrun. i know you mentioned you wanted to run glitchless, so this point is irrelevant to you, but for ABHs (a movement glitch used in every other category) you need to jump right when you hit the ground. on kb+mouse, we bind our mouse wheels to jump so we can spam jump inputs. there is no equivalent on controllers.

so to answer your question, keyboard is a lot better, however play with whatever you find most comfortable or have the most fun with

Thanks for letting me know. I will switch over then once I get it for pc. If aim is a massive factor then controller just won't do.