Interesting....I have completed the repair (which did find errors) and seems to be good.
At this moment AE CC and PS CC are in use... no issues?
Super strange you gained all that space back ? Sure your not missing stuff you misplaced or forgot about.
Perhaps its a huge page file or something 😕
Try this tool out., i know its old but i love it ..helps to drill down and what is eating space up.
http://grandperspectiv.sourceforge.net/

After install and you run a scan you can put your mouse over each block and see what it is and where.
So in this example what ever all that blue area is to the right is, its likely all in the same location on the drive and likely a similar type of file.
You can also delete and go to file locaton from that view as well.
Super useful!