Duna surface map unstable?

[PB666]

I am having problems landing on Duna.

This has repeatedly happened. As I approach the surface of the planet I decrease the velocity on the HSI to almost zero and I get about 50 meters off the surface, then the surface suddenly accelerates to the craft even when I hold the vertical velocity as close as I can to zero. When this happens the texture of the surface goes fuzzy, like I am far away from the surface. For example I can see details of the surface 1000 meters above then around 50 meters or so it goes fuzzy and 2 seconds later the surface of the planet crashes my craft, just like that with landing velocities of 0-3 meters per second.

Is this a game file problem, do I need to reinstall the program?

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Edit- disregard, I had physics acceleration on, doh!

Edited October 14, 2017 by PB666