When I play in the Clockworks, sometimes, when I step into a certain spot, portions of the floor (where the floor meets the background picture) will disappear. I can literally take one step to the left and everything will return to normal, but if I step back into that specific spot, the floor's edges will disappear. My computer exceeds all the minimum specs and I am running it on low quality, with Render Effects off and Cull Transients on.

Any suggestions/opinions/facts?