We released a new benchmark test: Does having too many temporary files and junk registry data make your computer slower?
Spoiler: Yes, by a lot, actually. I was shocked by how much.
Here is the full report: https://jv16powertools.com/does-junk-data-slow-down-windows-10/
And here is Reddit post about it: https://www.reddit.com/r/pcmasterrace/comments/uxgic0/does_junk_data_such_as_temp_files_or_registry/
If you like this kind of content, please feel free to share this and we'll do follow-up tests.