Here's a screenshot taken by somebody in another thread:
The issue seems to only lie with Radeon cards. I'm using a 7850 and I experience the flicker occasionally while playing.
Reports of 7900 series experiencing the problem too, but somebody said that they were performing fine on a 5700.
I also experienced a visual distortion that I have not seen before - seen in this image here on my mini map:
If everyone could start grabbing the latest drivers (they released new non-beta drivers) from AMD I would really like to know if it solves the problem. I'm especially interested in having people who previously tried the beta drivers and they did not fix the issue.