Perfomance bad very bad

a serious error occurred that is important to the game and to you.

a serious error occurred due to a technical change being made, I don't know which one it would be but a serious error was created that confirms it in 34 pc of 4 gb of ram and video 2 gb and it has to be solved because it is important to you and mojang

 
 
 
the problem was seen when loading a map,It was also seen when loading menu that what it looks like is performance.
 
I hope you can solve this because it is important for you for mojang and even for all the people who play this for the future.