So, removing them could slow down certain things.
Again, this took a matter of seconds (2.79 according to the application) and found 1.9GB to remove mainly cache files and, although that’s a good amount of space to free up, remember that cache files are there to make things like web browsing faster. There’s a Custom Clean option which can analyse Windows and Applications.
You can select which junk to remove, but only in groups of different types like Recycle Bin, Temporary Application Files and Temporary System Files. On my test laptop, the search found 7,371 trackers, 792MB of junk and a single app to update – Audacity in this case.