Can I view player collision without drawing render geo?

Apologies for poor communication. When I’m in the game, this is a screenshot of what I see when player collision is enabled. All the geometry is displayed along with player geo, in an “unlit” view.

And in a test level, this is a screenshot of what I see when player collision is enabled. All the render geometry is hidden and I only see player collision.

I’m not sure what’s causing the two levels to display different results when using the same button (in this case “player collision”) but my guess is that drawing all this geometry on screen is what’s causing my performance drops.

Which is basically my original question. How do I enable player collision and hide all geometry except player collision.