thunderbolt – Verify decision of 2013 Mac Professional driving an Apple Studio Show

I’ve a 2013 Mac Professional that’s working macOS Sequoia (by way of OCLP). This Mac Professional helps Thunderbolt 2. I linked my Mac Professional to an Apple Studio Show, which requires Thunderbolt 3, with these two connectors:

1. Thunderbolt 2 to Thunderbolt 2 (Amazon: Apple Thunderbolt 2 Cable (0.5 m)). I plug this cable into my Mac Professional.
2. Thunderbolt 2 to Thunderbolt 3 (Apple: Thunderbolt 3 (USB‑C) to Thunderbolt 2 Adapter). I plug the cable above into this cable, after which I plug this cable into the again of the Studio Show.

The show activates and the whole lot appears to work apart from the digicam.

How can I examine the output decision and refresh charge of the show? I run system_profiler SPDisplaysDataType in Terminal and I see the output under, which appears to point the show is working at 5K, however I believe the show is definitely working at 4K upscaled.

AMD FirePro D500:

  Chipset Mannequin: AMD FirePro D500
  Sort: GPU
  Bus: PCIe
  Slot: Slot-2
  PCIe Lane Width: x16
  VRAM (Complete): 3 GB
  Vendor: AMD (0x1002)
  Machine ID: 0x679e
  Revision ID: 0x0000
  ROM Revision: 113-C3861J-687
  VBIOS Model: 113-C3861LB-029
  EFI Driver Model: 01.0D.687
  Computerized Graphics Switching: Supported
  gMux Model: 4.0.11 [3.2.8]
    Steel Assist: Steel 2
    Shows:
      Studio Show:
        Show Sort: Retina LCD
        Decision: 5120 x 2880 Retina
        Framebuffer Depth: 30-Bit Shade (ARGB2101010)
        Show Serial Quantity: JT29V0VY6D
        Show Firmware Model: Model 17.0 (Construct 21A329)
        Primary Show: Sure
        Mirror: Off
        On-line: Sure
        Robotically Modify Brightness: Sure

I’m additionally unsure the place to examine the refresh charge.