Why Disable/Enable Automatic Disk Defragment in Windows 10
By default Windows automatically defrag your hard drive. Windows 10 itself schedules the best time for this to do, while this could decrease real-time performance it might be better if you choose when to defrag yourself.
One of the biggest reasons for defragging your hard drive is you’ll likely experience faster speeds and less loading time. When your files are not scattered but are stored in one place, they load faster and your whole system speeds up. Your computer can sort and locate files much easier.
The steps to disable automatic defragmentation:
1. Click Start and open up the Disk Defragmenter window by typing “dfrgui” (without quotes) into the search box.
2. Then Check/Uncheck Run on a schedule and click “OK”.
NOTE: Disk Defragmenter serves an important purpose: to keep your hard drive running at peak efficiency. So if you do decide to disable automatic disk defragment, make sure to run the tool manually from time to time, or replace it with a third-party defragger.
For Third Party defragger you can refer :