AugmentedSteam VS Bulk-Crap-Uninstaller

Actually using CHROME + https://augmentedsteam.com/ is the BEST experience that you can ever obtain in your Lifetime at the moment because https://developer.valvesoftware.com/wiki/Chromium_Embedded_Framework is long time proven to be "Broken" against other websites, Steam UI overhaul removed CEF UI for Electron UI that even Back button is now broken from time to time, there's NO Ad blocking and other extensions on Steam Client, in short you're utterly clueless of what you're suggesting.

This is why I use the store from my browser with the augmented steam addon.

I use it with their browser plugin Augmented Steam: https://augmentedsteam.com/ (you can use with Chrome, Firefox, Edge)

・Augmented Steam：https://augmentedsteam.com/

Seriously. I've saved so much money thanks to ITAD (and, by extension, Augmented Steam) since Steam is not often the site offering the lowest price. Even now with the Summer Sale going on, most of the games I'm interested in are cheaper on Green Man Gaming, GameBillet, and Fanatical. Anyone who isn't using ITAD to track sales is a bit of a fool.

And you can check this either by using SteamDB like https://steamdb.info/app/546560/ to learn the percentage difference after setting your currency and checking the other currency or simply install https://augmentedsteam.com/ that does the same thing but more pretty.

Is it sluggish in the current state ? Have you tried to do a 'real' complete uninstall using BC-Uninstaller, deleting all the leftovers in the registry that might be corrupted or sth ?

It's not exactly a debloater, but https://www.bcuninstaller.com/ will help you to get rid of majority of bloatware. It's not automatic unfortunately, you need to know what you're doing.

Try this: https://github.com/Klocman/Bulk-Crap-Uninstaller

try uninstalling via BCUninstaller and reboot your PC afterwards.

Bulk Crap Uninstaller

BulkCrap Uninstaller works well when it comes to uninstalling things and finding leftovers.