So yesterday, everything was perfectly normal before I went to bed as usual. But today when I woke up and took my PC out of it's sleep mode, everything I do is as slow as it can be. Where I really noticed something was wrong is when I opened up YouTube and it took like 30 seconds - 1 minute to load the page completely. Sometimes it even just gives up loading so I'm staring at a blank screen. Clicking on a video, same problem and also some buffering problems once it's actually loaded up. Also it's not only YouTube that's slow, same goes for my Gmail, Twitch, Facebook,.. even just Google takes a while. So at that point I was guessing I had some problems with my connection but everything seemed fine when I did a speedtest and my Steam is also able to download my games at normal speeds. Things I have tried so far: First of all, restarted my pc, I reinstalled Firefox but no success so far. (Also my plugins/addons seem to sync up between Firefox and Chrome, not sure if that might be causing some issues) I started Firefox in safe mode but still the same issue. And finally I disabled Flash hardware accelleration. I have never had issues with firefox like this so I hope someone can help me out with this.