Geometry gets ripped after a period of time

[Vasili]

Hi

I get ripped geometry on my model after a period of time(see image),
where I have to start all over again from a new .bip file from solidworks.
Anyone have had this issue?

I am using Keyshot 6 + solidworks 2015 ( I have had this problem before In keyshot 4 + solidworks 2014 and older PC)

Update: added a second picture where It has gotten worse

[TpwUK]

Is this happening as the render clears up in the real time preview, or does it happen further into the project ?

Martin

[Vasili]

It happens further into the project, the more I make changes In the scene like changing material, lighting or rotating texture the worse It gets.
In the beginning It works ok, but as time passes It gets worse the more work I put In to It.