If you have problems with your VS Code that uses over 100% of CPU on Windows or 30–40% on Linux, I may have a solution for you. The problem causing this is often TSServer. And with small edit in settings, you can get to 1–5% CPU on Large projects as I have. Just go to settings.json and add these lines:
This solution is a little aggressive, but it is going to help a lot, and it's better than VS Code taking all your CPU power.