In the past 20 years I’ve used Vim to write PHP, Java, Bash, C, C++, Ruby, Perl, JavaScript, Objective-C, Swift, a proprietary S-expression language, and documents in LaTeX. This isn’t something I drop into occasionally, it’s my primary editor used along side compilers and interpreters. I’ve never once said, Vim doesn’t start fast enough or is taking too much memory (though I have caused it to hang based on my own dumb search or replace commands).
There are plenty of native text editors that work just as well. On the Mac I’ve had great experiences with BBEdit, TextMate, and SubEthaEdit. Other people like Sublime. There really is no shortage of great text editors.
Developers need to start treating electron apps like the plague. They are merely low effort attempts at cross platform tools written in the most user hostile way.
edit: https://github.com/OmniSharp exists, and is LSP-ish, but I have never used it.
It's been years since I've used Resharper and maybe things have changed, but if you are looking to improve battery life, it's one of the last things I would start using.
My work laptop is often at full ram usage (16mb) with the fans spinning at full speed.
I used to code in vim and sublime text. The change in system load is shocking. I like Rider and will continue to use it but it's crazy how much of a hog it is.
At least you've upgraded beyond 640k!
I've used VS Code, Rider, and even VS2022 via Parallels, and in the end I switched to VS Mac. It had been a year or so since I last really tried it and in that time it had gone native ARM (faster and less battery drain) and been much improved.
Unless I need legacy stuff or Windows-only dev, I now see no reason to use anything other than Visual Studio Mac on my M1 Air for C# development.