It is indeed insanely huge compared to your model. I have changed the settings to meters, but it keeps importing huge mesh.. Also when zoomed out it often looks like on screen #1. I thought it was an issue on 3d Coat side, but then I imported a mesh from C4D and it was the same, it also lost subdivision when I tried to put a displacement map on it.
It is getting realy frustrating to me, struggling with it for 2 days. but I hope I can find a solution for this issue. I have tested it on 2 computers, with Octane demo and full standalone version - same issue.
Here are some screenshots with settings, maybe that could help.
material preview works fine :
when applied to mesh it looks like this :
more settings: