claude-code - 💡(How to fix) Fix Korean IME input lag on Windows 10 at Claude Code startup (Ink TUI raw mode conflict) [1 comments, 2 participants]

TL;DR

Running claude inside WSL (Ubuntu) or waiting for a potential fix in a future Claude Code update may resolve the Korean input lag issue on Windows 10.

Guidance

• The issue seems to be related to the interaction between Claude Code's raw mode and Windows 10's IME composition handling, so any fix or workaround will likely need to address this conflict.
• To verify if the issue is indeed related to the terminal mode, try running claude with a different terminal configuration or emulator to see if the problem persists.
• As a temporary workaround, using WSL (Ubuntu) to run claude appears to bypass the issue, suggesting that the problem may be specific to the Windows 10 terminal environment.
• Monitoring future updates to Claude Code may provide a more permanent solution, as the issue started after a recent update.

Notes

The fact that the issue only occurs on the first input after launch and is specific to Windows 10 suggests that it might be related to how the operating system handles IME composition in conjunction with the terminal's raw mode. The redesigned IME engine in Windows 11 may avoid this conflict, which could explain why the issue does not occur there.

Recommendation

Apply workaround: Running claude inside WSL (Ubuntu) is a viable temporary solution until a potential fix is released in a future Claude Code update, as it allows for normal Korean input without the lag.