I'd like to make a terrain at the 4096 grid size, with the rolling hills fractal. Problem is it takes a while to generate one, even on my 1.4G machine. What i'd like to do is keep generating terrains until I find one I like with a 256 grid size, then be able to generate the same terrain at a higher grid size.
Is there a way to generate the same fractal terrain at a higher grid size? I know you can generate one at a lower grid size, then change the grid size, but I'm never satisfied with the result. I have tried shift and ctrl clicking on the fractal button, but this didn't work.

Thanks!
[Tim]