So in February there was a brief stint where Youtube decided to force everyone to watch videos only with the HTML5 player, which forced many Firefox users to watch videos with only 360p and 720p as resolution options, and even at 720p the video was blurry and playback was choppy. I tried using a couple different add-ons people made to force Youtube to use Flash Player again, but the video quality was even worse than on the HTML5 player so I removed them. And now, even after Youtube allowed Flash Player to be used again, ever since that mess happened it's affected the videos I watch. Now I can't watch videos in any real high definition, because on any resolution option the videos become "fuzzy." The edges of people, text, and objects are pixelated and either blurry or jagged and not crisp and sharp as they should be. I also have problems with "rippling," where it seems as if thin, vertical lines are moving on the screen and subtly distorting the video. I have tried uninstalling and reinstalling Flash Player, Firefox is on the current version, and everything else on my system that I know of is up to date. I have also tried watching videos in safe mode. Nothing changes. I can't get the videos to look normal again. For almost the past month I've had to start using Chrome specifically just for Youtube because nothing I do will get it to work properly again on Firefox.