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You’ll see performance impact only if there were thousands of invalid registry keys and errors on your system. Registry Cleaners are not very helpful in improving the performance of the system. The main aim of Registry Cleaners is to remove the invalid registry keys, shortcuts, and other types of errors. It also keeps the settings about how Windows behaves. It contains information about various users that are created for the system, and the programs and Windows preferences of those users.
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The Windows Registry is a hierarchical database that contains information, settings, and options about all of the software and hardware installed on the Windows Operating System. Best Free Registry Cleaners Software and System Optimizers for Windows Windows Registry
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