Running a wired pi-zero. Connecting through Windows 10. Issue appears to be directly related to Firefox and is not visibly duplicated on Chrome or Edge.
Here is a gif of the info loading on Slickdeals.net: Imgur: The magic of the Internet
Expected Behaviour:
Sites open with ads blocked - quickly
Actual Behaviour:
Some sites query many domains, often taking minutes to load on Firefox
Debug Token:
dkyfp9200c