Thanx a lot for posting that information on the forums Skurvyskull! My girlfriend and I we're experiencing literally the exact same problem. We both have Amd processors (hers a little older than mine), same ram and different Radeon video cards, she has the x550. Her game would crash every single time she would load into the sea areas and my game has yet to crash at all. We tried contacting support and never heard anything back, so we're very glad you did.
We applied this fix to her computer just as described and it worked perfectly! Her game runs as smooth as mine now. I knew it had to be something related to the gfx card. Thanx a lot again for posting this information, I'd imagine a lot of people are having this same issue and this fix should really be sticky'd somewhere... unless it is and I missed it, hehe.