Learning all the Time
XP / Vista / Win 7 / Win 8 / Win 10
This is nothing but a glorified Registry Cleaner.
Stay well clear !!
This, and other Registry Cleaners, will do absolutely nothing to speed up your system.
The registry is the heart of your operating system and I, for one, would not trust ANY software to delete keys from it.
Redundant entries in the registry are simply that - redundant and not used.
They do not slow down the system.
I have not read any report that says differently.
If your system is slow there are a number of things that you can do.
1. Scan for malware. We recommend Malwarebytes. [ the free version ]
2. Run Disk Cleanup. This is a Microsoft facility and is part of the operating system.
3. Check what is running at startup.
4. Make sure that your hard drive is not full. Windows needs at least 10% free disk space to operate efficiently
Hope this answers your question