Disk space usage anomaly..?

[Foppski]

Some days ago I saw that the SSD drive I use for games is showing some contradictory information regarding the available storage..
I have 3 maps on that SSD drive, "Game" "Steam" and "WindowsApps".
When I select these 3 maps and go to properties, it says that I'm using 529GB, this is a 1TiB drive, so the total available storage is 931GB, but the strange thing here is that if I choose to view hidden maps and select every map and select properties, it says 533GB...

 

Question: Where the F is the remaining storage..? :&
The SSD in question is a Kingston A2000 1TiB.

 

I may have some idea where this storage is hiding, or rather what it's being used for... but I'm not sure..
I have had my Shader Cache size set to "Unlimited" for a couple of months or so, Maybe that's what it's being used up on..?
Any help would be greatly appreciated! :)

[Foppski]

Problem solved: 

 

My suspicions were correct, rebooted into safe mode, excluded network for good measures, and deleted msixvc, and presto!

I just cleared up some 398GB of storage, roughly.. ;>