Windows 10: How long is my restore point taking?

I had to do a restore point on my pc and now it has to undo almost 400 gb of games&folders.

It has been already an hour since and it's 5 A.M.

How long do i have to wait?

I have a pretty powerful pc if that helps with anything

.

:)

 

Restore points being deleted

This is not a pitch but a valid suggestion of a superior alternative.

 

Restore Point Taking Over An Hour?

I had to do a restore point for my laptop on Windows 10 and it's been doing that for over an hour. Currently, it's stuck on "System Restore is restoring the registry..."

How long does this take?

 

How to delete inactive System Image Restore Points in System Restore

Windows 10 64-bit.
When I click "show more restore points" in System Restore I see a bunch of old "system image restore points" that were deleted in past and do not correspond to any currently active restore points. Clicking any of these old restore points, I simply get an error message saying they could not be found, and to select another restore point instead.I would like to delete these restore points listings but have been unable to do so.
So far, I have tried steps mentioned below without any luck :

Disk Cleanup through (C Properties
Disable System Protection (OFF and ON) in System Protection for OS (C
Disk Space Usage to minimum (slider button all the way to the left then 'Delete all restore points for this drive'),
Delete all shown Restore points in CCleaner (the problem ones do not show here),
Reset Windows Backup to Default in Windows 10 with 'Reset_Windows_Backup.bat' utility.

Any suggestions highly welcome.