Single Status Update
So, I was reading some forum on a totally different topic, one guy suggested this CompactGUI as a tool for the Windows 10 "Compact" function. It seems this is no new feature, but the version in Win10 is much more powerful and more optimized.
TLDNR; You can take a program, for example my ARK installation folder (>100GB) and compress the contents with little to no performance loss when running the application. Doesn't turn it into a ZIP or RAR achive, either - we'd not notice the change as users. It is a disk space saver, and it's very good at it. According to the reports, my ARK could potentially turn into a ~50GB folder instead of twice that!!
Check it out, I'm gonna: