I had a similar same error on a client's PC. The fix was not obvious. I booted to safe mode, then clicked on start, power then restart. It cleared up. I don't know exactly why this has helped a few times but toss it out there as something to try.
Windows can indeed do odd things right after login. It's debatable if that's a bug. All the apps for the user are not up and the messaging that makes Windows do what it does can be full so I would not attempt to fix that issue. I know that moving to SSDs helps by reducing this startup time.
In the 1703 Home version there was an easy to access option to disable automatic driver updates. This seems to have disappeared in 1709. My 1703 had this setting enabled. Now, after updating to 1709 I frequently see an event 'Driver updates blocked by policy settings'. Great thats what I want.
However, occasionally left click on the window icon does not open the menu, even though right click works. This can occur at random after several hours with power on. Just occasionally it happens immediately at log in., in this case there is an event log 1000 with faulting module 'StartUI.dll'.
When this problem occurs if I try to shutdown I get a screen message about windows update and plug and Play driver install - I can't remember the exact wording - next time I will write it down -it doesn't identify a specific device driver.
Perhaps the inherited disable driver update setting is causing a problem. How can I turn the driver updates back on?. Then I can see if the problem goes away and then try to disable the updates again.
SFC /SCANNOW does not find any errors. Fast Startup is disabled.