guys, I think I discovered the cause of the slowdown
the maps are
1) 512x668 (+glowmp and shinemap at the same size)
2) 512x1004 (+glowmp and shinemap at the same size)
3) 512x679 (+glowmp and shinemap at the same size)
4) 512x407 (+glowmp and shinemap at the same size)
5) 118x390 (+ shinemap at the same size)
6) 256x256 (+ shinemap at the same size)
7) 256x256 (+ shinemap at the same size)
and
8) nameplate at 420x61
this means something like 14 maps (including shine and glowmaps, 15 with nameplate) with a bastard size
You *must* have textures with sizes power of 2, which mean 2,4,8,16,32,64,128,256,512,1024,2048...., elseway MAJOR slowdowns will happen, like in this case. It is even a surprise that those maps don't kill completely the framerates, like what it happen in other games when you use textures with bastard sizes.
I made the same error with the corellian corvette because I didn't know that when I made the maps:/
I doubt I'll have time for even THINK to fix this for at least a week, the faster solution btw is probably that someone with max or lightwave bake it