When I'm loading an ocean the game gets very low. And when I install a Shaders the game is without any texture of any block.

When I am playing and I go to an area where there is a lot of water the game starts to catch and when I dive and leave the player's head under the water the game returns to normal fps. This gives anger because it is complicated to rise to breathe on the surface.

 In the case of Shaders whenever I install a Shaders the game normally loads only that the time that I enter the map it does not load any texture it is all transparent