Dear computer warlords. I am here by humbly asking for your advice on cleaning my computer. The thing is, I thinking my computer is getting slow, and I'd like to have it working top speed. It is a 6/7 years old Intel i7 with 16GB RAM memory and a nVidia GT550M Graphic card ASUS laptop. I think I have it pretty clean but that's never enough, so what do you PC gurus suggest? I mainly use CCleaner (free and other Piriform stuff) and RevoUninstaller for PC management on installing and uninstalling software. I mainly use this computer for graphics and design, mostly Photoshop and Illustrator but also CAD and 3D work. Then, there's Reaper, Focusrite stuff (I have the onboard sound card disabled) and a few VSTs... I've recently upgraded my Autodesk software (AutoCAD and 3DS Max) to 2019 versions and I'm feeling the PC got slower. Also, I know anti-virus software may interfere with CAD software, making them work slower, I'm using AVAST... so far so good... Any suggestions on FREE PC management software besides those mentioned? Is defragmentation any good yet? Should I just format and re-install everything from scratch? (I'd rather not)...? What say you?