Q: My models flicker with artifacts in the viewport. What can I do about it?
A: The problem occurs when there is too extreme of a gap in the camera's near and far clip values. For example 0.001 and 10000. Values of 0.1 and10000 or even 1.0 and 10000 are less problematic.
Note: If your entire 3D viewport is flickering then you may have video card issues.