UPDATE: Was able to upgrade the OS from 1709 to 1803 by a doing a clean install but there are still crashes and stability issues. I'm beginning to suspect memory compatibility as the unit was upgraded with a 2nd module of A-Data 8GB DDR4-2400 which uses Nanya chips. While the Original 4.0GB memory module was an SK Hynix.
The BIOS has been updated to the latest available from Acer. This feels like the issue I was having when I first built my Ryzen 2400G using an ASrock board. I was able to solve that by switching to an Asus Prime board. But since this is a laptop , not much can be done. Even when the drivers are installed properly, system crashes. Running a synthetic benchmark results in a BSOD.
With all the problems I've been reading with Ryzen Mobile, I'm beginning to think it's not ready yet. If an veteran like me can have problems like me, what more those who just wants to buy a laptop and expect it to work out of the box without issues.
I really thought this was just a Windows 10 update issue but it's pretty clear now. It may have been a serious error in judgment on my part that I recommended a Ryzen based laptop to a client. This is really frustrating to say the least.
I don't suppose Ryzen Master would work on Ryzen Mobile? I could probably change some memory settings since laptops don't offer much settings to meddle with from within the Bios.