So there is no solution to "resolve" this distortion? Or even to fix it to be not that hard distorted.

The problem with the "fisheye" effect, as has been beaten to a bush in this forum a thousand times, is that our eyes natural perceive peripheral vision in that manner. When you stare straight ahead, the game looks like one solid picture because of this. If you look at the peripheral vision, the game looks distorted. Now, in real life if you turned your head to look at your peripheral vision, this wouldn't bother you because the item that was previously in your peripheral vision would now appear normal and the item to the side (that was previously in the center) distorted. However because the game is pre-rendered, and the game can't tell when you turn your head, the game can't properly render the side view only when you turn your head. The best solutions are to try to find custom HUD's (for example, I use a totally custom World of Warcraft UI just so I won't have to look at the side screens) and maintain your vision looking directly ahead. The only possible way ATI could ever fix this problem would be to make you wear some sort of device or glasses so that the game would know when your head is turning, although, by the time that this is a realistic fix, some sort of Virtual Reality will most likely be possible. Stop complaining about a problem that isn't ATI's fault, but the natural human body.