Sorry, but I'm not following you Richard. Say that I:
- 1. draw a cylinder, which will represent my hi-poly geometry
2. draw a cube, which will represent my lo-poly geometry
Rendering, I obviously see a cylinder and a cube. Next, I:
- 3. make the cylinder into a component with definition name cylinder
4. make the cube into a component, with definition name cylinder_proxy
Rendering again, I still see a cylinder and a cube; switching on
Output > Export > Proxies, though, and re-exporting, I now see two cylinders. Next, I:
- 5. create a layer named hi-poly
6. create a layer named lo-poly
I then:
- 7. put the cylinder on layer hi-poly
8. put the cube on layer lo-poly
Hiding layer
hi-poly, my cylinder disappears from the viewport, so I make a copy of my
cylinder_proxy cube and move it where the cylinder previously was. Re-exporting, though I am looking at two cubes in my viewport, I see two cylinders in my render.
So I'm not clear on the nature of the problem: hi-poly geometry on hidden layers is substituted for low-poly proxy geometry on visible ones.
epix wrote:I have 16GB of RAM but maybe it is not sufficient?
SketchUp can use an absolute maximum of 4GB (or 2GB, if you are not on SU8 M1/M2), regardless what you have on the machine. So, to know what's going on, you need to open Task Manager and monitor how much memory is being used.