My Firefox was being slow and unresponsive, I went onto the Spotify Webplayer website and tried to play music, it said I needed the latest flash update installed so I went and did that, afterwards, whenever I clicked on the address bar, it would crash, it wouldn't say that firefox was crashing, it would just become unresponsive and couldn't be brought back. Even If I went into private it would still crash. I presumed an add-on was causing this so I went and disabled Hardware acceleration, literally all of my add-ons and my one theme. This didn't help either, so eventually I created a new profile, I literally do not know how, it just appeared in my profiles folder as I was trying to get the bookmarks out of the original profile. I went and used this profile and it was broken also, except it didn't crash whenever I tried to use it, but I couldn't access websites with it, it would just say Connecting and the little ring would spin, but it literally wouldn't connect. I reset it again to try and fix the problem, and it did for around 8 hours, but then the problem resurfaced, I found out that if I went into safe mode or Private mode, that I could access websites normally. It acts completely normally, bar the slight slower loading times when using private, but I've always had that so it's to be expected. I simply don't know what the issue might be.