Post a screenshot of the the performance tab from task manager? Just want to see you computer specs.

I open double the number of tabs in Brave and Chrome (as those in Firefox) but I almost never need to terminate their processes.

This started around the end of last year. Could be gold-plating in the Firefox codebase? Please revert to some earlier release.

Hi

Do you have many tabs open on Firefox?

Do you have any add-ons installed?

If Firefox is consuming too much memory, you can pause some expansion features and disable some paging to reduce memory usage.