AMD Radeon R9 M370X not being used, Mac

[led5150]

Ah, That first command did bypass Device #2 and did the benchmark on #3

Matthews-MacBook-Pro-2:hashcat MattChamplin$ hashcat -d 3 -m 500 -b
hashcat (v6.0.0-4-g5628317d) starting in benchmark mode...

Benchmarking uses hand-optimized kernel code by default.
You can use it in your cracking session by setting the -O option.
Note: Using optimized kernel code limits the maximum supported password length.
To disable the optimized kernel code in benchmark mode, use the -w option.

OpenCL API (OpenCL 1.2 (Jun 15 2018 20:52:09)) - Platform #1 [Apple]
====================================================================
* Device #1: Intel(R) Core(TM) i7-4980HQ CPU @ 2.80GHz, skipped
* Device #2: Iris Pro, skipped
* Device #3: AMD Radeon R9 M370X Compute Engine, 1984/2048 MB (512 MB allocatable), 10MCU

Benchmark relevant options:
===========================
* --backend-devices=3
* --optimized-kernel-enable

Hashmode: 500 - md5crypt, MD5 (Unix), Cisco-IOS $1$ (MD5) (Iterations: 1000)

Speed.#3.........: 214.0 kH/s (49.40ms) @ Accel:256 Loops:250 Thr:64 Vec:1

Started: Mon Jun 22 02:15:29 2020
Stopped: Mon Jun 22 02:15:36 2020

So yeah. Looks like it's related to that tread you posted. However, I'm not sure exactly what it's suggesting? Should I use --force or not?