OK, I just thopught of a way to check what happened for real myself (with that Memory setting) and it is just set to Mixed.
This means that you faked the photo sequence.
Am I right ?
This could have happened too :
1. fralippo installs XXHighEnd on a fresh W10.
2. All is fine. He now changes the Memory setting.
3. A message to reboot occurs as shown in the first photo.
4. fralippo thinks
and re-installs XXHighEnd.
5. At the first startup he sees again this message and makes a photo of it.
6. After that and a reboot the normal install sequence follows (again).
Ad 5.
This happens because at #2 during/after the first attempt of install, the UAC was changed (including a message telling so).