far clipping planes error

Hello, when i set the clipping planes above 10 000 000 i get “Assertion failed on expression: ‘IsNormalized (normal)’”

Now i need far clipping planes for a customly created background.
Does the error cause sideffeckts and how can i surpress it or have far clipping planes without triggering it?

Use a skybox instead of a far off background image. I would guess that having something being so far away is causing floating point precision errors.