Dear Xav1029,
Good day! Thank you for posting your query in our community.
Based on your description, when you draw on the external tablet which is connected with OneNote, handwriting will not display properly.
To narrow down the scope of this issue, could you please try the following to see the result?
- If you use mouse to draw in OneNote, will the same problem happen?
- From the video you provided, you use OneNote 2016. If you try to open and draw in OneNote for Windows 10(it is pre-installed in Windows 10 system), will the same problem happen?
- Please provide a screenshot of your OneNote Product Information(open OneNote>File>Account>capture a screenshot of the Product Information column).
Appreciate your cooperation in advance.
Sincerely,
Jazlyn | Microsoft Community Moderator