[memory issue] After update memory consumtion looks insane

[EvilPhobos]

i have 400+ saved tabs 10 from them pinned, on the browser startup memory usage almost 6GB...
Also there a problem with memory releasing, after video watching memory still reserved by browser, and releases only after browser restarting (tab closing doesn't help)

[EvilPhobos]

[StevieB]

I have just posted about a similar issue here > https://connect.mozilla.org/t5/discussions/ff-slow-loading-images-and-videos/td-p/34378

ONE web page open. Look at the process tree picture.

[EvilPhobos]

Try NOT to discuss several different problems in 1 topic... this is like to run marathon and pull weight at the same time, this topic also could be devided into 2, and should definetely for developer fix