Aspire V3-522G Upgrade from Windows 10 1709 to Windows 10 1809

My Aspire V3-522G notebook started life with Windows 8.1 a few years ago, and was upgraded to Windows 10.  Over time, automatic updates have successfully installed and my current Windows is 1709.  
Automatic updates to Windows 1803 and 1809 have taken a long time to go through the install process and have failed at the 30% point, when the system restarts and the changes are undone.
I have tried installing from the Windows Update Assistant, and this has got past the 60% point, but has also failed and undone the changes.
I've done a Windows Update error check, a disk check, have deleted the update libraries, uninstalled network and virus protection and any older programs, have done a system files check and repair, and the update still fails.
My BIOS and drivers are the latest offered by Acer or, when later drivers available, by the component manufacturer.
Has anyone successfully installed Windows 1803 or 1809 on the V3-522G and, if so, will you please let me know what you did to achieve this?
I have read that display drivers might be problematic.  The Intel Windows 10 driver is Acer-customised with the latest version being from 2015.  Is it possible that this driver is the problem?  Should I override the Acer-installed driver with the latest Intel driver or will this cause other problems?
Help would be much appreciated as I'm thoroughly sick of the repeated automatic update attempts to install the upgrades.  I've set my network to metered to avoid this but I do have to check for updates occasionally to ensure I at least keep 1709 up to date.