Performance is the reason why I stayed with Sublime Text. I gave VSCode a try, and it is really great, and transition from Sublime Text is easy. They probably stole most of their good ideas from it, while improving on others, a practice that I definitely support.

However, it is not as responsive. By that, I mean sub-second stutters, nothing game breaking, but enough to affect the feel.

Note: coding in C++, using the LSP plugin on Sublime, and the standard language support on VSCode. Building and source control done separately on the command line. I use "modific" on sublime to see the differences, and the built-in support for VSCode.