What is the cause of the problem with Mozilla Firefox in the screenshots?

Question

Mozilla Firefox

Hello.
The browser frankly tormented, if not for the huge number of bookmarks, history, passwords, developer tools, etc., this "miracle" would have been demolished long ago.
Who faced how to fix it? Appears after the browser has been open for a long time, many tabs have been closed/opened. It happens after the computer wakes up from sleep. And at the same time (I have a plugin for saving open tabs - sessions) it becomes impossible to save sessions. I've tried disabling plugins to no avail. You just work with the browser and once ... black spots start to jump, when rewinding the page, hovering over the elements, "darkness" walks. The page layout is falling apart. Not the worst examples - in the attachment to the photo.
PS Now I am writing a question and the browser freezes, hangs, hangs, etc. There is enough RAM, an SSD is installed. I upload images for the question - even the explorer opened in the browser hangs, does not display folders, then displays folders, in short, lives its own life. Restarted the browser - again like clockwork for the time being.

Answer 1

There may be glitches with the video card ..
And yet, in FF everything is in one process, again, there may be some errors in the memory or even on the SSD (well, there is a system cache there), just in case it would not hurt to check the machine, just ff with 100500 tabs can take up a lot of virtual memory, and suddenly the SSD began to fail there ..