A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
If you are running OneNote 2016, could you try the following:
Disable handwriting recognition by unchecking the option "Enable automatic handwriting recognition" under File->Options->Advanced
Let me know if you see any improvements. If you are on Windows 10, please make sure to have the KB3093266 update released today (see above post).