GPU is reporting 300mhz max frequency, which is consistent with the benchmark.
RX 580's typically run at 4x+ this level:
https://browser.geekbench.com/v4/comput ... RX+580+mac
LuxMark seems to be running OpenCL reasonably fast:
13,000+ results, which is typical for an RX 580.
This is not consistent with the GPU frequency reported.
I've tried turning on/off inject ATI, setting FakeIDs, etc. etc. Suspect this is maybe related to GPU fan throttling? Or the AMD driver itself?
Mojave OOB + Voodoo Kext for Audio <- Current
High Sierra + Inject ATI, DEINT, Disable -radoff, FakeID=0x67df1002