Still, why pay or use an adblocker that just slows down your computer and internet?
Never had any slowdowns, the only time I even remember it's there is when it blocks a potentially malicious site r asks if it can update the main program. |Now why have it?
1) it blocks ads in the entire system, so I wasn't even aware Microsoft had added ads to the start menu and skype some time ago.
2) I don't have to select lists and configure adblocker extensions in every browser I use, just in the central Adguard software. Once I set an exception or personalized rule it instantly affects the entire system.
3) adblocking is just one of its functions, it offers anti-tracking, parental control and in the last version system-wide DNS over HTTPS.
4) I can easily export settings in a computer and import in another instantly having it configured as I want it.
Seriously I see no reason not to use it nor am I aware of any software that offers all its functions. But if it slows down your machine then don't use it.