Windows 10 too slow disk usage 100

Part one
MSI mode can be disabled for specific devices via the registry:

Check if you are running the inbox AHCI driver (StorAHCI.sys):

1)Open a command prompt with administrator privileges. Run in the command prompt window: devmgmt.msc
2)Under IDE ATA/ATAPI Controllers right-click on the AHCI controller node and select Properties. This node is usually called “Standard SATA AHCI Controller.”
3)Navigate to the driver tab and click Driver Details.
4)If you see “StorAHCI.sys” in the list, you are running the inbox driver.

Disable MSI for the controller in the registry:
5)In the same properties window opened in step 2, navigate to the Details tab and select Device instance path from the Property drop-down menu. Note this path.
6)Open the registry editor by typing regedit in the previously opened command prompt.
7)Navigate to: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Enum\PCI\ \Device Parameters\Interrupt Management\MessageSignaledInterruptProperties, where refers to the device instance path you noted in step 5.
8)Change the value of the MSISupported key from “1” to “0”.
If you don’t know which controller your boot device is attached to, repeat steps 5 through 8 for all AHCI controllers found under 2.

Reboot

Part two
Google Chrome:
In Google Chrome, go to Settings > Advanced > Privacy and security> use a prediction service to load pages more quickly
and untick it.

Part three
Skype:
Make sure you have exited Skype and it is not running in the taskbar (if it is running in the taskbar then quit it).
Open Windows Explorer and open the following folder:
"C:\Program Files (x86)\Skype\Phone\"
Now right click "Skype.exe" file and then click "Properties" and open the "Security" tab.
Click the "Edit" button and then highlight "ALL APPLICATION PACKAGES" and place a tick in the "Write" box.
Click "Apply" and then "OK" and then "OK" again