Thanks Blake, the water map is definitely smooth! Looking to do something like this on mine! : ) Did you try a PNG 24+8 as Jonathan suggested? Think could help to smooth? So, are you using the absolute maps (without converting to relative) to displace? In my case, if I use absolute maps I get totally wrong distortions: Absolute map: https://gyazo.com/f50b499006e479aafb2123102b06ff82 Results (incorrect distortions): https://gyazo.com/df512b0fcb757bf28ac89de868d93a96 When I convert from absolute to relative, I get correct distortions. But still lots of aliasing, which is why I want to test a PNG24+8 Relative map...