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TabUltraC slower/laggy with online drawing sites (like



  • Official comment
    Booxshop Service

    Dear customer,

    We apologize for the inconvenience.

    Due to the e-ink screen having a low refresh rate, it is normal to have a lag in drawing on the website. The built-in Notes app is optimized for handwriting. Therefore, the Notes app has less lag.

    Besides the Notes app, we also optimized the handwriting for the OneNote and Evernote apps. You could enable handwriting optimization for OneNote and Evernote apps via the steps below:

    1. Long-press the OneNote app and click "Optimize"

    2. Switch to "Handwriting" and enable "Handwriting Optimization".

    Our tech team will make the handwriting optimization available on more apps in the future.

    Many thanks for your time and understanding.


  • linker C

    Thanks.  I used to use OneNote but the cloud syncing takes too long.  So I switched to web based witeboard.

    I guess the optimization doesn't extend to browser.  I don't see "Handwriting" option under optimize.


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