Operating system: Darwin-19.2.0-x86_64-i386-64bit 64 Bits
Integrated Graphics card: Intel(R) UHD Graphics 630 Intel Inc. 4.1 INTEL-14.3.9
Discrete Graphics card: Radeon Pro 560X
Broken: version: 2.81 (sub 16), branch: master, commit date: 2019-12-04 11:32, hash: rBf1aa4d18d49d
Short description of error
Blender does not use discrete GPU in Macbook Pro 15" 2018.
Exact steps for others to reproduce the error
Opened Blender and used activity monitor to check for GPU utilization. Tried disabling automatic graphics switching in macOS settings to force discrete GPU usage, much smoother.