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Windows 11 Chinese IME Severe Input Lag Issue

HabibK-8879 0 Reputation points
2025-08-09T08:19:30.9+00:00

I have a very similar issue with this post - Windows 11 Chinese/Japanese IME Severe Input Lag Issue.

It almost always happen when I switch from English to Chinese, the app will just freeze for a few seconds. This happens to all apps while switching language, but during the freeze other apps are just fine if not typing - e.g.: Chrome, WeChat, Task Manager, Start Menu, Explorer and etc..

Also, I noticed that CTF loader is eating 20% - 30% of my CPU, when and only when the issue is persisting.

Specs:

Edition Windows 11 Enterprise - 23H2

OS build 22631.5624

Experience Windows Feature Experience Pack 1000.22700.1106.0

I have tried all the solution provided in the above post mentioned.

Start up IME Services Again - Cannot be done as does not exist in my service list.

Get Windows and IME up to date - Everything up to date.

Turn off Hardware Prediction of Keyboard Text - Already off.

Clear out the IME dictionary - Done multiple times.

Check the system files and run DISM. - Ran multiple times.

Make a new profile for yourself in Windows - Yes, this solves the issue, but how can I fix the main profile?

Turn off any third-party antivirus or security software for a short time - Windows Defender is the only one I have.

Many Thanks.

Windows for business | Windows 365 Enterprise
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  1. Brian Huynh (WICLOUD CORPORATION) 540 Reputation points Microsoft External Staff Moderator
    2025-08-14T06:23:00.27+00:00

    Hello,

    Thank you for providing such a detailed report of the issue.

    Based on your findings, the issue is not with Windows or the IME itself, but with a corrupted configuration or data file related to the Chinese IME within your specific user profile. The high CPU usage from the CTF Loader (ctfmon.exe) is a symptom of it struggling to read or process these corrupted profile-specific files when you switch the language.

    Solution 1: Reinstall the Chinese Language Pack

    1. Go to Settings > Time & language > Language & region.
    2. Find the Chinese language pack in your list, click the three dots (...), and select Remove.
    3. Restart your computer.
    4. Return to the same settings page and click Add a language to reinstall the Chinese language pack.

    This process will rebuild the IME configuration for your user profile.

    Solution 2: Migrate to a New User Profile

    If the above solution does not work, migrating to the new profile is the most reliable solution.

    1. Log in to the new user account you created.
    2. Open File Explorer and navigate to C:\Users<Your_Old_Username>.
    3. Copy your personal files (from folders like Desktop, Documents, Pictures, etc.) to the corresponding folders in your new profile (C:\Users<Your_New_Username>).

    Important: Do not copy the AppData folder, as this will likely transfer the corrupted settings.

    Let us know if this helps.

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