I agree, but I have a counterpoint. Kate has been my editor of choice for all text editing things, I think since times of KDE 3 (so you see it's a long lasting

I agree, but I have a counterpoint. Kate has been my editor of choice for all text editing things, I think since times of KDE 3 (so you see it's a long lasting preference by now). However, I have always used JEdit to copy-paste huge text, like anything beyond 100k log lines from some software. JEdit seems to handle everything fine, while Kate has always hung up on me during some 10s of seconds (any kind of parsing or colorization are disabled in Kate, and the minimap is too... after that wait, everything works fine though). Turns out, VSCode handles this kind of pasting nicely too, so I've replaces JEdit with it. Which drives me to think there is some low hanging fruit performance wise in Kate.