I have pretty much all the problems described above and one more.
I have problems distinguishing if the plane is flying directly at me or directly away, when it is in the range of d300 to d800. I usually find out when I see tracers coming my way.

Addtitionally, I often see what I feel is the strobe effect of the propeller eroding a displayed image of a plane.
My only suggestion is to bump the resolution down to 800x600. The planes appear a little more "Globly" at farther ranges, but they are easier to see IMO.
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Mino
The Wrecking Crew
Trainer