Unity Skybox Material on Sphere

Hello , I´d like to add a Skybox Procedual Material to a Sphere but the outcome is very Buggy. The Material changes/Flickers with every step. I am still a Beginner with Unity so expect dumb questions.
Thank You.


Apparently the building dynamic skybox shader is not designed to work on a sphere.Is there any good reason not to use it as the skybox material?

Yes its Part of Story/LevelDesign. The whole Island is in Bubble. So it wont Work this way? Then I should try to work with deactivation or I paint a Skybox myself I guess. Thank you.