Micro lag to the point where its unplayable

So this happens on realms, servers, and friends worlds and i know its not my wifi. My friends have to same problem to and they just thought it was just them until i said something. The game will just freeze up for like 4 or 5 seconds but it doesn't stop the mobs and players. So if your in a pvp fight or fighting mobs you game will just freeze up for 5 seconds and you cant do anything then you finally unfreeze and your dead or super low. plz fix its unplayable at this point