I've heard alot of good things about this shaders pack, and so I tried it, but it doesn't work, and the only difference is the fps drop.
I also get an error: [Shaders]Error: Invalid program final
first is normal minecraft optifine with shaders mod, but no shaders pack
second is minecraft optifine with shaders mod and "ArikLp No Lag Shaderpack.zip"
third is minecraft optifine with shaders mod and "ArikLp's Seus shaderpack [Nur Schatten].zip"
fourth image shows the error message i get