big raids

[planespotter]

i am making missions with 50 RAF vs 50 Luftwaffe, mixed bomers and fighters.

using SW corner of map where not too many towns. basing on reports from raf.mod daily diary.

but it seems the framerate is lower when using luftwaffe bombers than when using just fighters only, is this right?

is there a german bomber type which is more fpa friendly than another? the Do17 seems worse than the He111 but I can"t prove that.

thanks