You are welcome. Glad to have helped. Yeah, I learned a bit from this thread too. I did create a 2nd Recovery partition so that I could try out the commands I was suggesting you do. But I'm all back to normal. I even deleted the Recycle Bin that had showed up in my original Recovery partition after reverting to it.
(1) As I posted on page 19 with pictures, I get very quick system images with DiscWizard. The CD booted to a screen that said "Starting Acronis UEFI Loader (x64) (v.1.1.36)". It said 46.5 GB were getting imaged. All the partitions are put into a single .tib. Windows said C: was 46.2 GB of used space, so I got somewhat less than 50% compression. The .tib is about 25 GB. It isn't a sector by sector. It took 11 minutes to make & another 3 to verify. And my Windows system image backup done a day earlier took just 13 minutes to complete.
Edit: That's on an external USB 3.0 Seagate 2TB HDD plugged into a 3.0 port. USB 2.0 can be over 10 times slower.
I know you've got treble or quadruple my data including Partition 6, but I still think your time to make an image is excessive. But at least it isn't the 5 hours you started off with. Slance310 got you down to 2.5 hours, IIRC. I was hoping obviating a sector by sector would do the rest, but apparently it hasn't. Sorry that didn't happen.
(2) Shift+Restart should work. I did a BING of "Shift+Restart doesn't work" & could quickly find nothing informative.