I usually don't trust these system enhancement magic tools, but Registry Cleaner seems legit if I go by the descriptions alone.
Still, even if it is, these descriptions are too vague for me to know if the changes it makes are something I want. Is there anywhere I can see what exactly each of the options entails?
For instance, the "set Windows Explorer components to run in separate processes" is clear enough. But what exactly is optimized and in which way for "Optimized response speed of system display"? Same thing with all the other vague options.