Sorry to drag this old thread up to the surface again, but I have the exact same problem, and the same Radeon-card. I can't really wrap my head around the answers, though - did anyone sort it out? And exactly how do I "underclock" the memory and the core?
I'm getting tired of these black ice-bergs suddenly appearing and disappearing ... I've been playing FS9 alot, and never run into anything like this ...
Well, thanks in advance!