Vim
VSCode

VSCode+Vimでキーリピートが効かないとき

More than 1 year has passed since last update.

これで解決

defaults write com.microsoft.VSCode ApplePressAndHoldEnabled -bool false         # For VS Code
defaults write com.microsoft.VSCodeInsiders ApplePressAndHoldEnabled -bool false # For VS Code Insider

https://github.com/VSCodeVim/Vim#faq

VSCode Insiders は正式リリース前のバージョンで、新機能がいち早く試せます