How to: Speed up slow disk defragmentation process.
Solution:
Minimize the 'Fragmentation' window and select 'Do not show defragmentation process details' option.
1) Do not show defragmentation process details. (The details screen slows down the defragmentation process.)
NOTE: If the details screen is already displayed, choose 'Hide Details' to close it.
2) Minimize the 'Defragmentation' window by clicking on the 'Minimize' button.