If you're have a problem with performance in vscode 95/100 times it's memory not cpu bound. Obviously emacs uses less memory than vscode, at least at base configuration.
Maybe, it's still incredible to think that memory pressure would create that much latency. And I'm not that picky, I use a hp48 calc (on which lag is almost a feature). I'm just shocked when people say emacs is sluggish while vscode flies.
I found it incredibly distracting. In Emacs... Magit is instantaneous while orgmode tangle/export is embarrassingly slow - but never a dealbreaker
anecdotally eshell has some of the lowest latencies as well https://danluu.com/term-latency/