Grass And Grass Shader Performance

Hi guys, so I have been trying to implement grass on my terrain for a few hours now and so far I have come across methods. Adding the grass mesh that I have as a detail or adding the grass texture, onto the terrain. The issue is that adding it as a grass won't let me use my custom shader that I made using shader graphs on it, but it's very performant. But if I add it as a detail mesh I can apply my custom shader on it but performance tanks drastically. The issue its self is not with the shader(I checked). How do I make it more performant. I wanted to use Lod groups, but I cant use that when using a detail mesh. Occlusion culling helps a little but not by much. And I also have GPU instancing turned on on the material of the grass, but no change. How do you guys handle grass in your games?