I came to VSCode from Visual Studio with R#, which undoubtedly affects the way I perceive VSCode, but for me it absolutely flies, even when editing 200MB text files (not that I do that often, just saying)!
But even on that, Visual Studio is annoyingly slow.
I also have a 2017 13" Macbook Pro don't know the exact specs off-hand; I don't use it often), and VSCode is really fast on that too.