It's impossible to work normally. When I try to work in 2d window Artlantis is buzzing with no using of second CPU. I think the problem is in Artlantis, not in graphic card or any other device.
it seem the artlantis file is corrupted,tray to fix the original file before converted to artlantis, if u made using archicad, open the last doc that u think is good and have no problem with artlantis then merge the file, and save it.
hope it will help.
Speech is about tens of different files. All of them are ok. I am personally was working with some of them and I am really sure, that the problem is interrelated with the graphic card & Artlantis compatibility. I have four five years old computers, where the Artlantis works normally, and tree new computers with ASUS ATI EAH2600XT video adapters, where these problems really exist.
I worked with ATI Firegl and Artlantis 1.2.6 before 2008, and there where no problem.
then i switched to artlantis 2.0
a week ago i switched to artlantis 1.2.6 to discover the same corrupted 3d when switching to openGL
so the solution is simple : the latest graphic card drivers are faulty.
the solution is to switch back to a before 2008 catalyst driver, and that worked for me (using 8.223.4.1.1 Rev. A 19 sept. 2006 driver) hopefully or me the hp website stores old drivers!)
Notice that artlantis 2.0 work with the latest driver without any problem...! (no triangles in opengl! no bug....)
