Has something changed in Firefox’s architecture? One thought I had is that maybe this has to do with something like page pre-fetching (I think Firefox does that), or something along those lines. I want to sort this out. Chrome seems to be so much better at resource management at the moment.
Update (2018-03-18): Mozilla shared this page to help troubleshoot Firefox memory issues: Firefox uses too much memory (RAM) – How to fix | Firefox Help
Common troubleshooting steps support recommends here: https://t.co/qkud0mjJgV however, on Nightly there is a new update every day. The best way to report performance issues: https://t.co/1Yv931ti9u – RM https://t.co/kz8t3XLC7k
(@firefox) March 16, 2018