This zone has a lot of graphical glitches for me; the underground area has blinking walls and floor -- most o fthe time you see the blue default color. Many of the rock formations blink too - and a number of them are not there; you fall through them when jumping on them.

On a side note, even running on maximum settings the beach (sand/pebbles) graphics are not very good -- they repeat so obviously, and with the lack of any kind of grass/bushes or other clutter to draw your eye away from it, it is very distracting and makes the zone feel empty. Drop some wreckage, rocks and so on it.

I run the latest nvidia drivers, so that isn't it. I had far less problems in the jungle city zone.