I don’t know if it is a particular build of Blender you are using, but I would try updating the drivers of your vid card first, and if that doesn’t work, try a different build of Blender. Anything graphical at all, I always look to update the drivers in any machine I use, and the issues clear up.
Hi ajm,
I pretty sure it not the blender build… Same happened with direct download from blender.org and graphicall. Hope it is not graphic card cause I have no idea how to update a graphic card… Is it difficult?