Re: Sims 3 64 bit ground texture
@middykitty4 Try turning up your graphics settings one at a time; if one setting doesn't help, you can lower it again when you raise the next one. Yes, this will affect performance, but it's worth trying to figure out whether any particular setting is involved.
If changing the settings doesn't help, please post the full specs of your Mac: everything under About This Mac except for the serial number.
Please also list a couple of lots where this happens—the world and either the address or the household or community lot name—that are NOT in Roaring Heights. (That's the only EA world I don't own, so I can't test it.) I'll mess with the settings in my own game and see what I get.