How to create a code editor as fast as a videogame

based on recent comments here on HN let's collect thoughts on the challenges on the

why we have noticable 120ms - 500 ms reaction times in code editors while we have fluidly running raytracing in games

and how to overcome them, the why everything is electron based, and so on. Let this be a fruitful discussion.

I'm using SpaceVim on a 6gen X1 Carbon - and I'm verry pissed off by the performance, still dont want to miss all the gooodies, still use it every day.