Just had another thought as I was looking at the planes in the hanger before upping -
I noticed that the textures apply really quickly once the 3d-model is recognized or "seen" in the hanger.
You can see this as you switch from different planes from the first time you get into the hanger. But when you go through the 109 versions (e4, f4, g2,g6,g10) and 190 versions (a5,a8,f8,d9) as well as the different p47 versions, even m3/m16 they seem to load super quickly, almost instantaneously.
But going from the 190 series to a lancaster, or b17, whos model hasn't been "seen" yet - there is a stutter even in hanger.
Anyway shubie - see if you notice this if you get a chance...start with the 190a5 model, then see if going to the other 190 versions(a8,f8,d9) is smoother in hanger...then goto a different plane, whos model you haven't "seen" yet.