clojure-ts-mode is not 100% stable as of today so I'd say it comes with its own set of tradeoffs Classic clojure-mode works well for many people. Is a given file particularly large or nested? Maybe you have many .clj buffers simulatenously open?

Yes the file is 2386 loc and it will keep growing, I’d prefer not splitting it

I’m fine with not 100% stable if it improves the performance

Yeah I'd say that's quite exceptionally large. I have some 1.3kloc file and I feel ashamed of it :) (and perceive lag)

But going ahead with clojure-ts-mode is fine 👍

Correction, it's 2.2k loc now 😇 I was thinking of splitting it for unrelated reasons - a bit harder than usual for me as I'm currently working with a unusual paradigm.

For a solo project I find working in a single file to be a significant productive boost. It keeps me from getting distracted with modularisation and boundaries and so forth. When it gets messy I just group it into do/comment sections and M-x hs-hide-all. It works for me 😅

what do you do if u look at the 8k LoC [clojure.core](https://github.com/clojure/clojure/blob/master/src/clj/clojure/core.clj) ? just turn off clojure-mode or font lock?

Hmm I tried editing core.clj and it was first at fast. Then when I opened it in more buffers it got slow.

Normally nothing happens that I remember, as one isn't editing that file. At least on my setup it's not font-lock itself that is slow but things like format-on-save or indentation calculation. (jumping to that specific file is also a relatively frequent thing to do, so people would have complained)

when working in anymentions.clj i tend to have like a second delay when inserting text

but maybe it’s not font locking :thinking_face:

is there a good way to do profiling in emacs?

electric-indent-mode is a usual suspect > is there a good way to do profiling in emacs? Yes (gotta leave, sorry)