When I set the subdivision of displacement for a grass texture too high, Maxwell won't render because of RAM limits. It gives me an error saying I can disable an option to allow virtual memory, but I can't find this option anywhere.
On another note, is there a better way to do grass (other than post production in Photoshop)? I've tried a bunch of textures, but they just don't look really all that compelling. The landscape scenes scream for displacement.