PiHole on RPi3B+ went from working to barely responsive

[jfb]

@ultimatemango

I’m definitely getting better performance, but at the expense of some ads.

I would use these tools to determine the source of the ads and then block them as required:

How do I determine what domain an ad is coming from?

Block ads or fix broken sites This FAQ is written in the context of finding out how to block an ad that isn't blocked automatically, but the same steps can be used to troubleshoot issues with sites that don't function properly. An example is that sometimes certain payment gateways try to collect metrics on the sale, but these domains are blocked by Pi-hole, so the payment cannot be processed. Also, some links send you through several referrers and if one of them is blocked, you may land on a …