Does anyone have this issue were firefox becomes slow if left open for a long time. In my case after a couple of weeks rendering becomes slow and when I use youtube for example if is laggy, just trying to change volume taka few second to show the volume bar. It also happens to my laptop at work. I have around 30 tabs open.
I have multiple Firefox windows with around 1-1.5k tabs on each, and they have been opened (and re opened) since about a year.
I ❤️ tabs, they make me feel all warm on the inside