graphic bug - ocean horizon noise/static

[Bilge_Rat]

I noticed this bug a few weeks ago, basically the area just below the horizon looks like the static you would see on old TVs. I posted screenshots, although it does not show up very well. It shows up most clearly in the tutorial. The rest of the ocean looks fine.

I switched to a NVIDIA 3070ti a few months back, but the bug was not present at the time. I thought it might be a driver issue so tried various drivers from the original 512.15 I was using when I bought my card to the newest 526.98, but no joy. I also tried changing the various in game graphic settings as well as those in the NVIDIA control panel, but again no fix.

Has anyone else noticed this and is there a workaround? I am also wondering if there was a recent change to the game code that might be causing this?