AMD graphics hardware seems not to preload object

[farshizzo]

The preload option will tell Vizard to pass the texture/geometry data to the OpenGL driver. It sounds like the AMD drivers are being too smart and not actually sending that data to the graphics card until it is actually rendered for the first time.

Not sure how difficult this would be to implement in your script, but one potential workaround could be to spin the viewpoint around for a second after the script loads.