I just discovered this and it works fantastically on any old / unused android device you might have lying around, I was shocked at how easy it was, all the instructions are there, once you have it running all you need to do is set your router DNS settings to your pihole IP address and presto! Ads and trackers are gone!
Your client hardware wouldn’t matter tho. State of the art or whatnot of a gaming rig would be fairly low. In sure most modern mobile phones create more DNS requests these days compared to a Windows machine and steam. It’s the configured software on the hosts that will dictate how much traffic your devices will get. A lot also cache by listening to the TTL. There will be some form of additional latency but your average Joe won’t probably notice.
Oh I see well I could say I’m an average Joe lol