Seems fine. (w/ Diffuse VS bump only)
Q:
Is your surface sibdivided or is it one
infinite plane?
What settings you have on the grout & bevel? (note: cinema shader behaves strange with extra-low values or 0 bevel :)
Fundamentals of presenting, reporting a bug:
Be sure it's a bug.
Share a test scene.
Describe steps to reproduce, OS & hardware specs.
;)
It takes time to do it all again & in life every moment counts.
Stay good. Strive to be better.