Do 32-bit textures decrease FPS when in 2D panel?

[ivo]

sorry for asking, but would 32-bit textures cause a drop in my frame rates even if I was in the 2D panel? I not they would if I was in the
stop view, but how about the 2D panel?

[aristoteles]

Remember some FPS drop with the 1600x1200 32bit textures Captain Sim uses. Once loaded in the cache the textures load quite fast, but I think the
differende in 2D view comes in the resolution they use rather than the BMP format,...

[pegase]

I cannot tell for all aircraft but here is what I could see when repainting my Wilco A400M

The original textures (bmp 32 bits). did not cause noticeable fps drop but where quite long to load.each time I switched to the spot view.

So I converted all the textures int DXT3 which load about 3 time faster.