Can you elaborate on this statement? How does Fast Startup fix weird issues?
Fast startup causes issues. Fast startup is like a hybrid hibernate. What this means is that when fast startup is enabled and you shut down your computer, Windows saves its current state to a hibernation file; this saves time on reboot for desktops or laptops utilizing hard disks. However, because Windows is never
truly shut down, over time stuff starts acting wonky or just refuses to work at all because Windows isn't entering a fresh state at boot.
If you disable fast startup, each time you shut down your computer and reboot, it's as if it were restarted.
If you utilize an SSD as a boot drive, fast startup doesn't seem to provide a noticeable difference in boot times in my experience, so I always disable it on any computer that utilizes an SSD.
We disable fast startup at our facility because all of our clients shut down their computers before leaving; we were running into the problem of people not restarting their computers because they thought they were refreshing the system by shutting down at night. We've had a wide range of strange issues from NICs just disappearing to printers not functioning, to the start menu not appearing. Once we received the ticket and went to the computer, the first thing we'd do is restart and 9 out of 10 times it fixed the issue.
Disabling fast startup just eliminates a massive headache for us.