Did you find any new way of doing this without running something every frame as this is not very efficient? 
I have noticed that even if you set View distance to near or medium they won’t work anymore too
Somebody sent me ths and it worked basically. Btw if your morph targets aren’t really as you want them on those lod’s then you need to make the lod’s yourself with their morph targets and reimport. You can’t only edit the lod’s morph targets
