I recently had a problem related to the Windows 10 Upgrade that was forced... um, enthusiastically offered... on my computer a while back. For months, I've been trying to figure out why my performance spiraled down the drain in many recent games. The ending solution: fresh-installs!
Still, I never actually used this. Instead, I used the "Reset your PC" option in Settings > Recovery. Despite Windows 10 being completely reinstalled and my games working as they used to once again, it allowed me to keep all my data regardless. If this troubleshooting tip were to be mentioned, should the Reset your PC option be the preferred method?