I tried your config, removed the HDR lines and set particles to high (because it was still set to low, and not to custom).
I noticed that the vegetation no longer reacts to the player, as I move through some plant, its leaves no longer react, and the player just clips through them. Same if I shoot the leaves, no reaction. Do you know what setting is causing this?
and to projectcafe - I believe you need to create such a file