Hi @smithkjw,
Could you try that, I saw some lenovo users who had the exact same problem on some applications.*
In the registry, under HKEY_CURRENT_USER\Software\Elantech\SmartPad,
set ScrollControl_Mode to 1 and reboot
I can help if you don’t know how to do it.
*https://www.reddit.com/r/techsupport/comments/3lhmhq/win10_elan_touchpad_scrolling_issues/
https://superuser.com/questions/1364774/elan-touchpad-sensitivity-per-application-in-windows-10-on-lenovo-flex-2-14