Umm, no. Nvim setup properly will smoke sublime. Check out one of the pre-built ide like versions like Astro or Lunar. Stock to stock, nvim will be faster. Configured to configured, nvim will be faster.

Exacty hows it more performant than nvim? Sure has some GUI functionalities but nvim supports many mouse actions even.

I've mostly used ST as my primary choice for quick edits or other raedom files thats not part of my project files. I use NVim while working on the CLI and dont need to do large rapid edits. If I need I can learn some advanced commands of nvim to make better use of it or set up some good key binds.

In terms of plugins, they both have all basic ones for daily dev needs. Nvim honestly have a bunch of useful integrations thats very easy to do if using something like astrovim.

Haven't seen any performance drops in either with bunch of extensions. On that note vscode has even more extensive plugins available for most setup needs without too much of a performance hit. I've only seen it perform bad on a 6th gen i3 with 8gb ram when run along with eclipse, dozen chrome tabs and postman. Thats the reason I chose ST initially.