someone said this"HOW TO STOP VIDEOS FROM PAUSING:I too was having this problem. I did a lot of researching and troubleshooting to no avail. Then I noticed that the old videos played perfectly. I then studied both the old videos and the newer (or more recently) submitted videos and noticed that many have Pop-up ads. Noticing this, I turned off my Po-Up Blocker and this fixed my problem. I can know watch videos without the 5 seconds pausing. I hope this helps."
Probably Youtube detects adblockers and punishes you this way.
oh pleasethats facebook.you cant go to facebook when you have an ad-blocker enabled.
It's at 720p because the uploader uploaded the video in that quality. Even if you found a way to view it in 1080p, it would just be 720p but stretched.
Way to completely disregard all the hours and hours of work it took to make YouTube and call it a piece of stuff just because it won't let you watch your stupid videos in the highest definition possible.