Windows 10 Feature Update 2004 taking too long to install

I am an independent PC support specialist and my clients are getting it rolled out to them.  One of my machines was asking me to install it or set a date and time.  The average time from saying yes to ready to use again is around 6 hours.  That time is not any faster on a brand new computer with 9th generation Core I-7 4ghz, with 1TB PCIE NvME SSD and 32gb of RAM.

For a giggle, I asked Google how long it takes to install the May 2004 Update which is now being called "Feature update to Windows 10, version 20H2" and Google's pleasant voice read off part of an article saying it takes about twenty minutes.  I giggled all right and that is how I wound up here.  I just wanted to toss in my experience with it on the 15 or so computers I have actually witnessed hands-on do it.  A few of those I was called in after it failed  It seems to install more successfully on custom-built machines than the name brand store-bought machines from the big manufacturers.  That is just my observation so far.  My laptop took it fine and it is one of those brand names we all know.  But it did take about 6 hours.

Here I am, on my birthday, just wanted to play some games before going out.

But no, Windows automatically started this update, even though I set it up to ask me before installing updates.

It started at 1AM.. Now it's 10:30. Ridiculous.

Thanks for the big team for every update! I have lasted version Win 10.0.19041.450 .  I have a ThinkPad Pro CPU 7e generation with more than 32Go RAM. Since few weeks, when I boot my laptop and I signin with standard account, the process Windows Update took around 15-20% of my CPU for 1 or 2 minutes. The fans are always quiet except if the CPU work more. Microsoft have new method to check how update the OS !? If I can find the good method (clue) to say to the service Win Update please keep quiet! I found an easy solution, I disabled the service Windows Update !! 

That is three or four updates ago. It's the one that's on my laptop, 2004 19041.508, but I am holding it here for a reason. In fact, I may do a clean install to get rid of 600+ GB of OneDrive files. As far as the best method, it depends on whether you have trouble with the standard update process. Otherwise....

Thanks for the big team for every update! I have lasted version Win 10.0.19041.450 .  I have a ThinkPad Pro CPU 7e generation with more than 32Go RAM. Since few weeks, when I boot my laptop and I signin with standard account, the process Windows Update took around 15-20% of my CPU for 1 or 2 minutes. The fans are always quiet except if the CPU work more. Microsoft have new method to check how update the OS !? If I can find the good method (clue) to say to the service Win Update please keep quiet! I found an easy solution, I disabled the service Windows Update !!

Be Patient....took me over five hours to load Windows 10 Feature Update 2004. I did the upload overnight (1AM) and it was ready my morning....five hours later.