Why Firefox Freezes Mac - MacKeeps Freezing

Therefore I have been using mozilla firefox freezing up Quantum for a little while today, so far it's been fantastic.
Lately ,firefox freezing up was behaving. I do not actually know precisely when, but it's likely under a month becausethese problemss showed up.
I do not exactly understand what's causing the issue. Every now and thenMozillala firefox would only freeze for some time. I must wait till it unfreezes to be able to do anything .
It occurs fairly regularly on youtube, in which the movie only freezes (although the sound is actiwellood ) and now I must wait around for a little to have the vigetgets moving again.
However, I understand this is not a movie juan st issue. Even easy tabs freeze up sometimes. I'd occasionally click on a folder use the ctrl+tab to browse around, however shifting tabs will hang every now and then. Once I click a folder, firefox freezing up pops up for several minutes before it eventually moves into a new tab.
The 1 thing that I noticed is that if this occurs, the CPU utilization spikes a little bit. It typically sits at approximately 9% to 15 percent based what I am doing (being around reddit, or viewing movies on youtube), however if this freeze occurs, the CPU usage will spike up to 60 percent. My CPU is a i7-6700hq skylake notebook CPU, using a GTX 1060 GPU.
So far I've tried: