When creating my cave as I place my walls then go in-game to check it out the new pieces sometimes don't show up.

Sometimes I have rescaled the walls, thinking that size may be the culprit but it just seems to be random.

I've tinkered with the alignment of the walls relative to each other, thinking it's an alignment problem, yet many times they just refuse to show in-game.

What am I missing?

Thanks for any and all help



EDIT:

I notice that when I walk around near the textures they pop in and out. So....I'm really at a loss here