Meshes in build occupy too much space
Hello everyone! I'm facing a weird problem, which I can' figure out myself probably due to lack of experience with 3D-editing software.
I'm having around 60 different character models in my Android game, all of them have animations etc. When building the game, in the log they are reported to occupy around 0.5 mb. Originally, their FBX files occupy 8 mb on hard drive.
And there are these 3 particular meshes that when built occupy ~6 mb (in the log they are twice as much - 12-15 mb - I know that cause I tried building the game without them). 3D artist report that there seems to be nothing wrong with the meshes, all import options are the same all around the other models - and I don't import textures, materials etc. in Unity, animations are made in the same way...
If anyone knows what else I might be missing, what to look into - please throw any ideas at me: why there might be such a drastic difference in space occupied?