Operating system: Linux-4.13.10-041310-generic-x86_64-with-debian-stretch-sid 64 Bits
Graphics card: GeForce GTX 1050/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 390.67
Broken: version: 2.81 (sub 14), branch: master, commit date: 2019-10-10 23:31, hash: rBf9cc51788bd6
Short description of error
Maybe related to this recent issue, I have another node tree that seems to affect eevee performance quite significantly.
Exact steps for others to reproduce the error
- open the attached blend file in 2.80 and drag any of the principled shader's inputs, like metallic or roughness, it should be smooth
- repeat in a recent 2.81 build, it should be sluggish