Powergraphics shows artifacts when zooming

[Joakim1]

Hi

I've got a strange problem regarding graphics. I'm running ANSYS 13 on a Windows7 (64bit) machine. The problem is that, if I'm running with powergraphics on, my plots (no matter prep, post or in between) are full of artifacts. The artifacts aren't visible when running full graphics, or if I do a replot after I've moved the model around.

I've asked the support of the ANSYS supplier, but all they could tell me was that they have heard of the problem and had asked ANSYS Inc about it but alas had no solution(yet), they did give some random suggestions about updating graphics drivers and disabling the aero theme in windows7 but that didn't help at all.

I'm running on dual graphic cards from AMD (Radeon HD6970 with 2 GB mem.).

So, is this a problem that any of you have heard of? Do you know if it's a compability issue with AMD cards? Or with Win7? or a mix of both?

(Running the graphics set "3D" does not result in artifacts, only "win32" and "win32c")

Regards

Joakim

I've a picture showing the artefacts and a comparison to the result after a replot.

 

[Joakim1]

Update:

As I had given up on finding a solution and posted my problem here I thought I'd get some work done and do that using /graph,full. Then I noticed that it seems there are artefacts in full mode too. But I only notice them when working with the geometry (in this case, using APLOT).