Realm lag

Hi. So, I've been with Realms for about a month now, and me and my friend who go on the realm have been experiencing really bad lag. Block lag, which is where you mine or place a block and then instantly reappears/disappears is a constant. There is atypically a 2-3 second lag between action and response, such as opening a door, a chest, attacking an enemy, etc. I've thought this could have been for the amount of villagers in one place but killing them and it doesn't change anything.