Shader out of focus in the background?

My Minecraft shaders are always blurred in the background. This happens not only with certain shaders, but with all that I have downloaded. I've already optimized my mipmap type and don't know what else to do.

By the way, play in Java 1.16.5, if that should be important.

here is a screenshot of what it looks like.

I guess that's more due to your texture package.

OK thanks! I try it.