Remove Global Clip Plane error w/o enabling it?

https://lh4.googleusercontent.com/KKilqqEZ_KJNZ5P1GyhNVLpjzh5ioAfo13Evz_JCvBoulEGmi4cdCL5T7J4Pt-YWTbg3ftdYhTTJ_ejiN_AAIJA

Is there a way to eliminate this error without enabling the Global Clip Plane? I’d rather avoid the performance hit.

Is this something in my materials causing this?