A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi, also have had the same issue (only really starting occuring recently). Seems to be the PC version has a problem, not the iOS version. The PC version usually used to auto-sync perhaps every second but now seems to auto-sync every 15 seconds.
To fix the issue, I manually use CTRL-S to force a sync on the OneNote for Windows 10 app, and the update shows on my iPad within a second.
Hope this helps!