I suppose "over half" is probably not correct, as other things are going to use system memory. I am just frustrated and not thinking before typing.

So I check out the about:memory page, and I see "Minimize Memory Usage" and options for "Global Garbage Collection" and "Cycle Collection" I hit those thinking "Oh cool I'm just a noob." "completed on <date>" Drops memory from 57% to 56%, and goes right back up to 57%.

Do those actually do anything? It said the task was completed instantly after I clicked the buttons... are they just there for fun?

One of the reasons I'm so frustrated, is because all I can find in regards to posts are "Oh <user> did you do this? Did you make sure this option was checked?" etc... and it's like "I'm not using a Frankenstein system... so whose system is Firefox designed for? Bill Gates? Someone with a $500,000 system?"

It's so weird to me that all these companies design all of their programs with flaws inherently there as soon as you install the program, and it's user error 99% of the time.

58% memory usage now.

Probably not a memory leak.

LOL... I hit the "Subscribe to Feed" option on the right just now, and Firefox downloaded a file called "Feed" ...

Is that... am I... What is happening right now?

I just realized, I had forgotten about Anti Malware Service Executable. Firefox is using a lot more memory than it should (and apparently is buggy.. lol...) but the main culprit, is not Firefox.

I'm dumb.

Don't mind me.

I have the same problem. I checked Task manager and FF is using nearly 50% more memory than Chrome and i have 16GB RAM. No wonder I've been having problems of late. I've tried all the suggestions and nothing has made any difference. I'm getting to the point I'm seriously considering not using FF.