So if you still have this issue, please do the following. You can test each one at a time to see if just one solves it.
1. Update your graphics driver.
2. Un-check the progressive texture loading box in the Performance section of the Preferences.
3. Set your realtime texture resolution to the largest texture size you are using, then un-check the "Render With Max Texture Resolution" in the render panel. If your realtime texture resolution is already your maximum texture map resolution you are not gaining any higher resolution by checking the box. You would only need to check that box if you run your realtime texture resolution lower than your maximum used texture resolution.
For instance. I sometimes run my realtime textures lower to save on VRAM on my video card. This is more important for iClone than CC, because of the amount of textures in a scene.