Don't know if I should delete this.  32.1 GB used up. Windows Update Cleanup is 2GB. I think that is safe to delete.  I can't imagine anyone running Windows on a 128gb drive.  If you game 500gb is necessary. 
 
BTW Windows drive cleanup takes forever with large files.

As long as you have a backup, I'd use Disk Cleanup and delete everything
Also, disable Fast Startup... the Hibernate file might be large.
 

Jim Roseberry
As long as you have a backup, I'd use Disk Cleanup and delete everything
Also, disable Fast Startup... the Hibernate file might be large.
 

Didn't know that existed.  I run high performance profile and it does not hibernate either.

Fast Startup will create a hibernate file (even if you have Sleep/Hibernate disabled).
It allows Windows to start faster the next time.
If you're using a SSD for your boot drive, it's going to boot fast with Fast Startup disabled.  

Hibernate is enabled in Windows 10 by default.

This command will eliminate the hibernate file, and remove the hibernate and fast startup.

1. Right-click on the Start button and choose Command Prompt (Admin) from the pop-up menu. If you are prompted by the User Account Control asking if you want to allow this program to make changes to your computer, click Yes to proceed.

2. In the Command Prompt window, type powercfg.exe /hibernate off and press the Enter key. Exit the Command Prompt window.