Hey there!
I seem to be having a bit of an odd sorting/clipping issue.
To reproduce the issue, convert linear units to Meters.
Then zoom out a fair bit so that there is a good bit of room around the grid.
Now create a poly cube and scale it up to be the size of the grid.
Now zoom the camera out and I start to see the surfaces break up into
triangles.
Attached is a screen shot of what I am seeing.
I am running 8.5, with NVIDIA GeForce 7300 GT (6.14.11.6218)
on windows 2000 at 1600x1200 on two monitors.