No internet on certain apps when using a custom DNS. Are there any fixes?

I’ve got a DNS set to block updates but I’ve noticed some apps which require internet access, specifically the No-PSN version of streaming apps refuse to work. At first I was setting it at 45.56.67.85 but YouTube wouldn’t load. Then someone told me about NanoDNS so I installed that. I’ve set the DNS to 127.0.0.1 as per the instructions but apps like YouTube, Netflix and Paramount still don’t work. Other apps that require online like SSPI do work though? I’ve tried deleting the custom DNS and all the apps work as they should but for obvious reasons I don’t want to risk raw dogging it. Is there a way to get streaming apps to work while still blocking updates?