I uploaded this with the physics at 'Lowest' but still, it ended up with 500 prims

I have no clue, but replurked for you.

thank you

What did you change your upload numbers to?

Also uploading it in smaller parts and linking in world might help

I've set the second LOD to copy the above and the lowest one I changed the value to 0. Set the physics to lowest and uploaded.

but I uploaded it all as one object... so I'll try uploading them in smaller parts Thank you