I played with it a few weeks ago when I got the update, but haven't tried exporting anything. Will give it a go some time today.
EDIT: Just tried a simple cube. It didn't import, or perhaps the scale was so small I couldn't see it. I will try importing into Blender and/or something else. One thing is for sure, it isn't UV mapped.
EDIT: The problem wasn't scale, and it WAS UV mapped. I imported into Ultimate Unwrap and it wasn't at origin. I moved it to the origin and resaved it and it crashed GG when I tried to import. I will mess with it a little more!
EDIT AGAIN: FBX is just too wonky. Blender export didn't work either, so I saved it as Direct x.
Desktop: i7 4770@3.4Ghz (passmark 9809), 12GB RAM, Win 10/64, GeForce GTX 1080 (passmark 12006), 1TB SSD, 1TB HDD; Laptop: i7 4800MQ@2.7Ghz, 16GB RAM, Win 10/64, GeForce GTX870M , 1TB SSD.