Did you do a clean install of the OS, or did you clone a hard drive over to the SSD? Cloning a hard drive to an SSD can cause performance problems since some cloning software is still unaware of 4K (advanced format) drives. A clean install is recommended when switching to a SSD.
You can also try clicking on "help" and select "restart with addons disabled" to see if one of your addons is causing the problem.
Hey sorry for taking so long to get back but I did a clean install of the OS and then I just reinstalled firefox again and it still does the same thing with no addons. like i'll put my mouse over the play button on the middle of the youtube video player and itll take a second to highlight and during that time I cant click on anything else and the all of a sudden the firefox tab on the task bar kinda moves and its almost like refreshes and then itll be fine for a minute or 2 then it'll do the same thing again. Not really sure what to do here. could it be a flash player problem? it only seems to do it on flash based pages. such as youtube or sirius xm online player.