Instant Grass trouble

vonHobo

So I was really excited about this product, but I have found it nearly impossible to use:

https://www.daz3d.com/instant-grass--photorealistic-grass-for-iray

You can see in my two renders, it really did not blend with the HDRI as the product says it can. And the scene with the stone environment worked, but the grass does not look as real as the product renders (more like a flat green blanket), and it took forever to get just right to cover the stones. The product instructions say to increase morph for a hill effect (so the plane is convex?) but I found you need to do the opposite, and decrease the morph to accomplish that, and even so it continues to extend to infinity unless you scale the plane down. 

I was not expecting it to be this difficult. 

Images attached.

 

So anyway, I'm thinking of getting this instead, hoping it's a bit easier:

https://www.daz3d.com/foreground-blends

If you know of any other product to accomplish this simply and easily, I would love to hear the suggestions. 

Thanks.