Pay attention to the shadows - dark areas on the water.
On storm 2.8 DX8, they move.
On MaelStrom DX9 64bit these dark areas (shadows) are static.
Viewing post in Shadows on the water
I think my eyes are just dumb...but anyway, I reviewed the code with the original and I found a line in the sea render that was mistakenly removed that involved the bumpspeed variable. I bet this is what you are seeing. I put that code line back into the source and I will bet this fixes the issue that you see. It will be part of the next Maelstrom update.