UAsset file size - fbx embedded textures

hello!

was curious if there were any settings I could adjust in Unreal to reduce the size of uassets generated from fbx files with embedded textures? i've recently swapped to using fbx exports from maya with textures baked in (for use in other programs like MotionBuilder), but found that the assets that these generate in Unreal are quite larger in file size:

[Link Removed]

in the above image, the first image is from a standard fbx of a character with a basic skeleton; the second is the same char and skel setup, just with textures embedded.

am i just overlooking an import setting, or asset setting that will correct this size difference?

thank you!