Operating system: Windows-10-10.0.17134 64 Bits
Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.80 (sub 60), branch: blender2.7, commit date: 2019-05-07 00:16, hash: rBbfef3bce1a93
Short description of error
Otherwise smooth surface looks OK in viewport, but in when rendered, shading is jagged.
Exact steps for others to reproduce the error
Check attached file.
There is just simple sphere, spot light, and sky environment. Shading is incorrect.