Check if you have 'stats reader' in your browse's add-ons. In IE it's manage add-ons, FF it's in 'extensions' and Chrome also in extensions. Check your browser's default search engines and change back to what you usually use. In progs and features remove Stats reader/linkbucks and/or any unrecognised program. Run TSSKiller again and also AdwCleaner AND THE FREE malwarebytes, scroll down for the free link. Once run then reboot and then run Ccleaner to sweep up. See if that helps.
OnePlus 6 review