FM's the State of Play with empasis on Climb performance.

[Crumpp]

I repeat that there would be no problem with the performance being correct relative to each other, yet slightly off by the same margin from the reference graphs. This is not the case, unfortunately.

It sure looks like it based on IvanK's chart.

If you I was doing the performance calculations for the game and you handed me that chart I would tell you there is nothing to fix for the gameshapes based off it. If my numbers werre right on the aircraft characteristics, I would start looking for a global setting instead of monkeying with individual aircraft.

You're stating that everything os OK and it's the atmospheric settings of the map (do we know what that is btw?)

No, I don't know it. I don't work for 1C and I don't think anybody else in this thread does either. It is the most likely explaination given that all the aircraft have a very similar margin of error. That chart is not reason to cry about individual gameshapes. Given that level speeds match standard conditions and climb rates do not, I would think something is up with the enviromental model.