Every mob in the nether is slow....

The game is so slow in the Nether that if i tap on any creature it will sometimes take 3 to 5 seconds and then it'll take damage.. But, on the video it doesn't take that long, it only sometimes takes 3 to 5 seconds to take damage, i don't know if it's also in the end but, feel free to try it out in the end. I only know it does it in the nether.