Not enough allocatable device memory on Mac

[CheeseMachine]

I'm new to Hashcat and am trying to use my Mac's GPU but keep getting this error when using command -d 3 -D 2 -b:

METAL API (Metal 261.13)
========================
* Device #1: Intel(R) Iris(TM) Graphics 6000, skipped

OpenCL API (OpenCL 1.2 (Feb 12 2022 01:56:27)) - Platform #1 [Apple]
====================================================================
* Device #2: Intel(R) Core(TM) i7-5650U CPU @ 2.20GHz, skipped
* Device #3: Intel(R) Iris(TM) Graphics 6100, 704/1536 MB (192 MB allocatable), 48MCU

Benchmark relevant options:
===========================
* --backend-devices=3
* --opencl-device-types=2
* --optimized-kernel-enable

-------------------
* Hash-Mode 0 (MD5)
-------------------

* Device #3: Not enough allocatable device memory for this attack.

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My Mac has an Intel HD Graphics 6000.
I tried using -d 1 for device 1 but keep getting a No devices found/left error.


-I returns this:

hashcat (v6.2.5-378-g4f6a1498c) starting in backend information mode

Metal Info:
===========

Metal.Version.: 261.13

Backend Device ID #1
  Type...........: GPU
  Vendor.ID......: 2
  Vendor.........: Apple
  Name...........: Intel(R) Iris(TM) Graphics 6000
  Processor(s)...: 1
  Clock..........: N/A
  Memory.Total...: 1536 MB (limited to 1024 MB allocatable in one block)
  Memory.Free....: 704 MB
  Local.Memory...: 32 KB
  Phys.Location..: built-in
  Feature.Set....: macOS GPU Family 1 v4
  Registry.ID....: 1080
  Max.TX.Rate....: N/A
  GPU.Properties.: headless 0, low-power 1, removable 0

OpenCL Info:
============

OpenCL Platform ID #1
  Vendor..: Apple
  Name....: Apple
  Version.: OpenCL 1.2 (Feb 12 2022 01:56:27)

  Backend Device ID #2
    Type...........: CPU
    Vendor.ID......: 8
    Vendor.........: Intel
    Name...........: Intel(R) Core(TM) i7-5650U CPU @ 2.20GHz
    Version........: OpenCL 1.2
    Processor(s)...: 4
    Clock..........: 2200
    Memory.Total...: 8192 MB (limited to 1024 MB allocatable in one block)
    Memory.Free....: 4064 MB
    Local.Memory...: 32 KB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 1.1

  Backend Device ID #3
    Type...........: GPU
    Vendor.ID......: 8
    Vendor.........: Intel Inc.
    Name...........: Intel(R) Iris(TM) Graphics 6100
    Version........: OpenCL 1.2
    Processor(s)...: 48
    Clock..........: 1000
    Memory.Total...: 1536 MB (limited to 192 MB allocatable in one block)
    Memory.Free....: 704 MB
    Local.Memory...: 64 KB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 1.2(Mar 20 2022 20:40:15)

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Is this error simply due to hardware constraints?
Why am I only able to use device 3 (6100) when device 1 (6000) is my actual GPU?
Is 192 MB not enough for any type of crack?
Would using an older version of Hashcat improve performance?

Any additional info would be much appreciated