flickering textures

I have build some houses i Gmax for FSX, but have problems with flickering white textures. When dx10 preview is turned on white parts of the buildings flickers, but when dx10 preview is turned of textures stand solid without flickering. Can anything be done in gmax to reduce that effect?And with DX10 preview turned off some textureparts of default ships is missing and just show up as black. In dx 10 preview the textures show up as normal.