PageDefrag is a free application from Microsoft Sysinternals that defragments paged pool and system page-file memory. It is used to improve system performance by defragmenting the Windows registry and paged pool memory. PageDefrag also allows users to customize the registry fragmentation process, so that the registry is defragmented when the computer starts up or shuts down. PageDefrag offers command-line parameters to automate the process, and provides a "defragging" report that shows the number of fragments and the amount of RAM that was freed up after defragmentation. It is also possible to defragment the Master File Table (MFT) and other system files. PageDefrag is compatible with Windows XP, Vista, 7, 8, 10 and Server 2003/2008/2012 operating systems.
Bundleware The installer may contain adware. Be careful during installation: https://alternativeapp.info/discussions/applications/11718/be-careful-in-the-installation/