PvZ GW on Iris Pro

[twoslottoaster]

I am having trouble with PvZGW on an Iris Pro (Gigabyte Brix Pro) - when rendering 3d, such as in-game or when viewing your avatar, most of the screen is black with occasional magenta or other bits showing sometimes.  Other games play fine, but not PvZGW.

I see on Intel's site that this game is supported with 'reduced' settings, but no matter how low I drop the settings, I see the same problem.

Suggestions?  Help?