Following issue also posted to github - https://github.com/sublimehq/sublime_text/issues/6537
After updating laptop to MacOS Sequoia 15.1.1 (24B91) Sublime Text (build number 4180) is now supper laggy with response to keyboard input, to the point of being unusable. When I type the characters show up in the document 2-3 seconds after they are typed. No characters show up on the screen and then 10 of them are dumped into the document all at once.
Other text editors are not having a problem, e.g. TextEdit, Visual Studio Code, so this is not a keyboard problem. This is a Sublime Text + macOS update problem.
Any advice on how to fix this is appreciated. Maybe some OS setting can be disabled? This smells like a macOS bug that is impacting Sublime Text, not the other way around. Could the Sublime maintainers please reach out to Apple to see what has changed that broke the input signal flow for Sublime Text?
Side note: Laptop is a Apple M2 Pro