I just went on the prowl to find a way to speed up firefox since it's been freezing up on some websites. I found out while studying this problem my cache was only 32 mbs and that the slowdowns might be firefox storing the session writes to my ssd every 15 seconds which is rediculous. Since I have 64 GB of ddr4 ram I decided to use what I wanted. I ended up making a cache of 2 gb in size the option in the about:config uses bytes so I tried using 8GB but the max has a popup of 2.3gb so I just went with 2gb, you might see -1 in the setting and that is a cache that is setup so it's a percentage of your ram but I wanted a lot more so if I had 20 tabs open it was still full blast for speed. Now the other one was session cache which is 15000 miliseconds so I used that to 30 minutes instead so it would take the cpu spikes away. So here are the pages I used for my new setup and it's wonderful and it'll save constant SSD writes also extending your drive life. https://www.servethehome.com/firefox-is-eating-your-ssd-here-is-how-to-fix-it/ this is for browser session setting https://lifehacker.com/speed-up-firefox-by-moving-your-cache-to-ram-no-ram-di-5687850 this is for disable disk cache and enable memory cache for superfast loading websites Each of these are good but combined they are incredible. Enjoy the faster loading websites. :)