New 1.16 update is unstable

I'm sorry but I just cant stand this anymore the lag is unbearable everyone else in my worlds keeps calling out 'lag' but its not me or them its the game itself. Including when I load up the game I immediately have high CPU usage ranging from 73-100% This is just miserable when playing with other people and having extreme lag. My device itself says I have already used like 6.8 GB of my CPU