Operating system: Linux-3.10.0-957.10.1.el7.x86_64-x86_64-with-centos-7.6.1810-Core 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 418.56
Broken: version: 2.82 (sub 4), branch: master, commit date: 2019-12-08 18:49, hash: rB761111efb8e4
Worked: 2.79 the last one
Short description of error
Changing dicing scale to extreme values (1 - 32) does nothing, as well as changing render properties -> subdivisions -> max subdivisions / offscreen scale.
The smoothing of the mesh and memory consumption stays the same.
There's a bit different behavior in 2.81a. Dicing scale works about between 1-4, >4 does nothing and max subdivisions / offscreen scale don't work either.
Exact steps for others to reproduce the error
Open the file, hit render.
With 32px of subd scale you must see jagged surface, but it'll be perfectly smooth.