Hi ryuzu0u0,
I am Dave, I will help you with this.
Every time you receive an update, Windows 10 will automatically create a new DeliveryOptimization folder regardless of any settings you have changed.
The only thing you can do is run Disk Cleanup on your C drive to clear out the contents of that folder.
Is your folder located here: C:\Windows\SoftwareDistribution\DeliveryOptimization