Map objects population

[pupaxx]

Can some of you comment how densely the maps populated are?
I suppose the maps are by default populated with essential objects (urban areas with their buildings, airstripes with relative structures, basic AAA emplacements and so on).
Is it predictable the things will get worse (in terms of FPS) when in FMB we'll add vehicles, tank columns, more AAA sites, trenches and so on?
In a modded il2 1946 channel map, long ago, I partially recreated the atlantic wall; i added alot of bunkers, AAA defenses at right 1943 place, etc ;doing so I noticed a considerably uprising of loading times and slowness in execution.
Your thought please
thanx