[GerritJ9]

Fabianfred, that means your original works out to be approx. 950 x 950 km, or 902500 km2. A 3/4 version (assuming that is a linear reduction) becomes 712 x 712 km, or 506944 km2. It's beginning to look like there is some sort of (artificial) limit to the size of maps IL2 can handle- time to find out if this is correct, and if so what that limit is.
I think I can trim my map somewhat without losing gameplay posibilities, but if the cut has to be substantial there won't be very much point in continuing with my map- it would lose too much.