Dealing with large files or huge number of open files is something where Notepad++ really shines, it's basically the reason you would use it for text files instead of VS Code, IMHO. I've had Notepad++ open many hundreds of files in single sittings to do file exploration, data-cleaning and really aggressive regex search/replace. It's obviously smart about how to deal with this without locking up the application.

Definitely my goto editor for non-code files. I've wondered if emacs can do the same, but when I've asked an emacs user responded with "Why would you want to open 800 files?" I take that as a "no"?