I don't know if this is a useful Tip or not for most people, alot of the games uncompressed are huge, I have a remedy for it, I leant during working on servers in the past.
Using Powershell or CMD window in the folder and use LZX compression via compact.exe tool
EG, using windows Explorer navigate to a folder you want to compress,
Hold SHIFT and right click the folder, Open powershell or Command Prompt what ever in installed on your PC
when the window opens, type the following command
compact /C /F /S /A /EXE:LZX
The 12.7GB folder now only uses 5.27GB of disk space,
this is a much more efficient and advanced version of selecting Compress Checkbox in folder properties window.
you can do this for plenty of games.. (Good for SSD's smaller space)
My Fallout 4 with Tonnes of Mods is about 130GB Uncompressed, and down to 88GB with LZX Disk Compression
some games work well for this,
this compression use low-medium CPU Usage to uncompress data on the fly, but once in system memory no problems.
I hope this PSA Helps