Hi Mathias, Thank you for your answer ... We're using openGL version of Java3D. I'm going to see if we can eliminate the problem with new version of drivers or with directX ... But this won't be a solution because our software has to be deployed on more than 100 PCs and we're not allowed to use DirectX neither to upgrade their driver. Nevertheless this will help us to identify the problem. I'll tell you if we find something new ... Thank you, Jean-Luc
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