Questions about editing build.prop because of ram management

Hey all,

I'm really starting to get tired of the terrible ram management on the s6. A few months ago I read about editing build . prop. So, I'm planning on doing this, but I've got a few questions first:

-is it still effective after the 5.1.1 update?
-is there a better "fix"?

Also, I've read somewhere that changing dha to fha has a better result. Can anyone confirm this and explain how to do this?

Thanks guys!