Fusion 360 > Substance > Keyshot not working well

[HVE65]

Hello,

I'm trying to get my models working from Fusion 360, but so far no luck, I've tried different tutorials but there is something wrong

1. First issue is that when I export models from Keyshot I have to select Auto Unwrap > recompute all to get the model to work correctly otherwise I end up having way too small textures 
2. and when I manage to do a nice texture on a model and bake the mesh maps the export to Keyshot doesn't seem to work nicely, I end up having way too small textures instead of the new UV map I created in SP.

What am I doing wrong ? 

thanks

[HVE65]

For some reason I have to export the mesh + texture to be able to get it working in Keyshot but then I found out that meshes exported from Substance painter to .fbx are ridiculously bigger so there's a scaling issue somehere I don't seem to  be able to work around, also sad you can't import .step, iges, or sat files directly into SP