Thin black line in sea?

[eonel]

I used to get these. It was because I had Ground Shading set to low. Set to Medium & they go away

[M_B]

Yes I used to have this too (HD5970).

I installed RadeonPro

Radeon Pro


And then used that to switch on Anisotropic Filtering (Not application controlled 8x - Create a profile for the Launcher.exe).

..... and I havent seen it since.