Please follow the below template, it will help us to help you!
I expect the Raspberry Pi to be able to keep functioning while pihole is in use and being queried by clients.
After some time the complete Raspberry Pi is unresponsive: the SSH session is terminated (packet_write_wait error), and the clients are unable to get to websites. I am also unable to re-establish the ssh connection for quite some time (takes over 15 minutes).
Some additional info: I route my traffic to the RPi by setting the DNS server to the RPi on two of my clients (phone and laptop) so the rest of my household isn’t affected by my messing about with their internet connection