Another gotcha that many folks fall for. All in one tweak tools, registry cleaning tools, optimization tools. Folks, these are BAD news and almost always cause unintended consequences.
If you do NOT know how to make your tweaks via powershell or manual registry changes and do NOT know what those changes are going to affect (and I mean based on your own knowledge, not what you find in another forum) and you do NOT have a back-out plan that's tested and works, then you probably shouldn't be doing it.
Far too many folks fall victim to these types of tools, accept defaults and just go crazy. Sure, some of the tweaks are fine, but too many times, you end up with future problems down the line.