At this point I'm not even sure what people mean when they say "slow" or "poor performance", since I have a mid-tier PC and have no problems with VSCode or anything else. Everything starts fast and I have no latency issues when typing. Imperceptible differences in time are not something I would ever consider a performance problem, certainly not in the case of UX.

Same thing with memory usage. If I'm not even using a third my RAM with my browser, editor and a few other random things open I'm not going to complain about something being a "resource hog".