I have the flickering too.
Radeon X1950 Pro. Latest driver.
I even get it on the ocean surface..a quick flash like a lightning reflection would look like.
I also get it on the outlines of all the clouds across the sky at once, a white flash, again, like lightning would do.
I get it on the masts of freighters.
I did NOT have this with 1.1.
It looks to me to be similar behavior as when a card is overheating, but too many people are having it....
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