El problema se resalta en el video de arriba.
Está en una instalación nueva de High Sierra.
Información del sistema:
MacBook Pro (Retina, 15-inch, Mid 2015)
Graphics: Intel Iris Pro 1536 MB
AMD Radeon R9 M370X:
Chipset Model: AMD Radeon R9 M370X
Type: GPU
Bus: PCIe
PCIe Lane Width: x8
VRAM (Total): 2 GB
Vendor: AMD (0x1002)
Device ID: 0x6821
Revision ID: 0x0083
ROM Revision: 113-C5670E-945
VBIOS Version: 113-C567A1-006
EFI Driver Version: 01.00.945
Automatic Graphics Switching: Supported
gMux Version: 4.0.20 [3.2.8]
Metal: Supported, feature set macOS GPUFamily1 v3
Intel Iris Pro:
Chipset Model: Intel Iris Pro
Type: GPU
Bus: Built-In
VRAM (Dynamic, Max): 1536 MB
Vendor: Intel
Device ID: 0x0d26
Revision ID: 0x0008
Automatic Graphics Switching: Supported
gMux Version: 4.0.20 [3.2.8]
Metal: Supported, feature set macOS GPUFamily1 v3
Displays:
Color LCD:
Display Type: Built-In Retina LCD
Resolution: 2880 x 1800 Retina
Framebuffer Depth: 24-Bit Color (ARGB8888)
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No