For me, the one thing that really worked well is setting up a blocklist (basically pointing "bad" domains to 0.0.0.0) and using dnsmasq to use that list. I've setup a cronjob to update the list daily so it was basically a one time step. I don't have metrics but overall loadtimes are much faster. Of course, this is limited to my PC so I'll have to set it up on my router for all devices at home to benefit from it (and even that doesn't take care of browsing experience outside home).