My setup is a Mac mini 2018 with a Razer Core X + RX580 card.
The monitor is connected to the Core X via HDMI.
The mac mini is connected to the Core X via TB3.
The media functions (take a screenshot, instant replay/gif, record a video) do not work at all. I get no notifications whatsoever. In an older reddit thread, I followed steps to obtain log files. According to the logs, I can see that there is some sort issue with Adrenalin detecting the egpu and categorising it as not supported. A full log is attached below. Here are the relevant bits leading me to believe it's something with the recognition of the gpu.
So if I'm understanding correctly, amddvr.exe isn't actually starting up in the first place and causing the above functions to not work at all. I'll be grateful if anyone as any ideas regarding this bug. Thanks 
Excerpts of log
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GetBigSWVersion called before EnsureBigSWCache. Assume old and keep dirty flag
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GPU does not support DVR: driver says: 1, isPX: 1, enableRenderForPX: 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component EnsureBigSWCache::BigSWVerion_:201950
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component SystemServices::IsRSInContentUIAvailable: Yes
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component dvrSupport=1, enableRenderForPX=1
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component DVR enabled if non-HG: notPX: 1, notDG: 0, HGOverride: 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG dvrmanager_component DVR is in renderonly mode
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start instant replay. DVR runs only for rendering.
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component InGame replay stop request received
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start Gif replay. DVR runs only for rendering.
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start instant replay. DVR runs only for rendering.
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component InGame replay stop request received
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start Gif replay. DVR runs only for rendering.
FULL LOG
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GetBigSWVersion called before EnsureBigSWCache. Assume old and keep dirty flag
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GPU does not support DVR: driver says: 1, isPX: 1, enableRenderForPX: 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GetBigSWVersion called before EnsureBigSWCache. Assume old and keep dirty flag
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GPU does not support DVR: driver says: 1, isPX: 1, enableRenderForPX: 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG dvrmanager_component Platform PX type is 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG dvrmanager_component Set AmdPowerXpressRequestHighPerformance to 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GetBigSWVersion called before EnsureBigSWCache. Assume old and keep dirty flag
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GPU does not support DVR: driver says: 1, isPX: 1, enableRenderForPX: 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component EnsureBigSWCache::BigSWVerion_:201950
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component SystemServices::IsRSInContentUIAvailable: Yes
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component dvrSupport=1, enableRenderForPX=1
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component DVR enabled if non-HG: notPX: 1, notDG: 0, HGOverride: 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG dvrmanager_component DVR is in renderonly mode
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component Topology is dirty
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component GPU 17408 active 1
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component \\.\DISPLAY2 AdapterIndex 0 VidPnSourceId 0
Thread Id:7132 2020:04:28-03:26:36 DEBUG system_services_component Adapter 49183, Type: 1, DevID: 26591, subSysId: -479847006, revId: 231
Thread Id:7132 2020:04:28-03:26:36 ERROR pipeline_component ClearSharedMemoryPixels - SrcExtSharedMemory not allocated
Thread Id:7132 2020:04:28-03:26:36 DEBUG pipeline_component CustomSourceInVideoOverlay - c-tor
Thread Id:7132 2020:04:28-03:26:36 DEBUG pipeline_component SceneInVideoOverlay - c-tor
Thread Id:7132 2020:04:28-03:26:36 DEBUG pipeline_component PipelineBuilder OnWmDisplayChanged
Thread Id:7132 2020:04:28-03:26:36 DEBUG dvrmanager_component Added Preloaded dt: \\.\DISPLAY2, BDF: 17408
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component DX9 : Choosen Device 0: Device ID: 67DF [Radeon RX 580 Series]
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component DX11 : Choosen Device 0: Device ID: 67DF [Radeon RX 580 Series]
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component InitDX11() created HW DX11.1 device
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component InitDX11() created HW DX11 device
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL Init 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL clCreateContext (55.284300)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component clBuildProgram hash 6361858243035925429
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component build options: -cl-std=CL2.0 -D DVR_READ_WRITE_IMAGE
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL BuildProgram (270.343500)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component clBuildProgram hash 8734853907968866203
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component build options: -cl-std=CL2.0 -D DVR_READ_WRITE_IMAGE -D DVR_BGRA_VER
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL BuildProgram (10.409300)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL CreateCommandQueues (26.377400)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL Init (475.200100)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL Terminate 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL ReleaseCommandQueues (7.288500)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL CL_CONTEXT_REFERENCE_COUNT 1
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL clReleaseContext (3.722300)
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component OpenCL Terminate (11.415200)
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component AVC Encoder Caps
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component GetEncoderCapsAVC: Init AMF context with DX11
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component GetEncoderCapsAVC: Initing AVC encoder: NV12 (1024x1024)
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Color conversion type: -1
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component EFC Support: 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Maximum profile: 100
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Maximum level: 52
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Maximum bit rate: 100000000
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component B-frame supported: 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Max Number of streams: 16
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Number HW instances: 1
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Max macro blocks per second (Speed): 1215484
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Max macro blocks per second (Balanced): 880971
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Max macro blocks per second (Quality): 1215484
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Maximum size: 4096x2160
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Minimum size: 64x64
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max macro blocks per second (Speed): 1215484
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max macro blocks per second (Balanced): 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max macro blocks per second (Quality): 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max FPS at 1920x1080: 150
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component HEVC Encoder Caps
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component GetEncoderCapsHEVC: Init AMF context with DX11
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component GetEncoderCapsHEVC: Initing HEVC encoder: NV12 (1920x1080)
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Color conversion type: 1
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component EFC Support: 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Maximum profile: 1
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Maximum level: 186
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Maximum bit rate: 2147483647
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component B-frame supported: 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Max Number of streams: 16
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Maximum size: 4096x4096
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Minimum size: 192x128
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max macro blocks per second (Speed): 2073600
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max macro blocks per second (Balanced): 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max macro blocks per second (Quality): 0
Thread Id:7132 2020:04:28-03:26:37 DEBUG pipeline_component Cap Max FPS at 1920x1080: 256
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component The DVR Pipline has been pre-loaded on 1 desktops
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component Remote server stop
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start instant replay. DVR runs only for rendering.
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component InGame replay stop request received
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start Gif replay. DVR runs only for rendering.
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start instant replay. DVR runs only for rendering.
Thread Id:7132 2020:04:28-03:26:37 DEBUG dvrmanager_component InGame replay stop request received
Thread Id:7132 2020:04:28-03:26:37 ERROR dvrmanager_component Can't start Gif replay. DVR runs only for rendering.
