Video quality is terrible!!!!

When the video Im watching a video half way through, it freezes for about 3 minutes, then starts playing again, sometimes it doesnt play at all and I have to close the tab and re open it again. Then when I pause a video for about 2 minutes when I have to do something, when I try to play it again, the play button stalls for about a minute or 2, then starts playing, or doesnt start playing at all >:( FIX PLS!!!!!!!!

MikeKiddYoung about YouTube - Watch, Upload and Share Videos, v11.49