If you’re like me, the first thing you did after installing Visual Studio Code on your Mac was to install the Vim plugin without completely reading the Readme file. There is a helpful command listed at the bottom of the Readme that you’ll need to run in your Terminal in order to get keys to repeat when you are in Normal mode:
defaults write com.microsoft.VSCode ApplePressAndHoldEnabled -bool false
If you are using the Insider version of Visual Studio Code, then you’ll need to use this instead:
defaults write com.microsoft.VSCodeInsiders ApplePressAndHoldEnabled -bool false