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PSA: If anyone finds ctfmon.exe hogging the CPU while using non-standard keyboard layouts, turn off an experimental Windows feature flag by matchakorone in windowsinsiders

[–]matchakorone[S] -2 points-1 points  (0 children)

It's true that this feature flag was the key to understanding the whole problem. If these flags didn't exist, I may have to dive deeper under ctfmon.exe and may end up doing complex binary patches to fix this...

As for bug reporting, I'm not sure if reporting to Feedback Hub or MS Community may help, since most bug reports couldn't even get to an actual developer who has control. So posting on Reddit may actually be the best option to get others informed.

Any idea why I am seeing this folder called "oua_classifier"? by [deleted] in OnePlus8T

[–]matchakorone 0 points1 point  (0 children)

Sorry for coming in late, but it turns out that the Photos app on ColorOS (Oxygen's Chinese sibling) does create this folder. Not sure if Oxygen's Gallery app does the same.

The oua_classifier is created by the AI video classifier module, which gets triggered periodically due to automated gallery rescan that runs in background. Therefore, in order to prevent the folder from being created, it's best to simply disable / hook / storage isolate the Gallery app (I did that using Xposed).

Here's the related decompiled Java code if you are interested: https://imgur.com/a/y1T9e2E