Mac OS X, 10.11.6.
Tabletop Simulator v9.1
Unity Player version 5.3.8f1 (9886e74732cf).

Screenshot: https://imgur.com/a/Fumh0

GPU details:
Renderer: AMD Radeon HD 7950 OpenGL Engine

Vendor: ATI Technologies Inc.

Memory: 3072 MB

Version: 4.1 ATI-1.42.15

Device: MacPro3,1

Shading language version: 4.10

PCIe Lane Width: x16
VRAM (Total): 3072 MB
Vendor: ATI (0x1002)
Device ID: 0x679a
Revision ID: 0x0000
ROM Revision: 113-E2080C-101
EFI Driver Version: 01.00.624




(Second GPU, not being used and it shouldn't have any effect, but just in case)
Renderer: ATI Radeon HD 2600 OpenGL Engine

Vendor: ATI Technologies Inc.

Memory: 256 MB

Version: 3.3 ATI-10.0.52

Device: MacPro3,1

Shading language version: 3.30

PCIe Lane Width: x4
VRAM (Total): 256 MB
Vendor: ATI (0x1002)
Device ID: 0x9588
Revision ID: 0x0000
ROM Revision: 113-B1480A-252
EFI Driver Version: 01.00.252