Thanks
@h9826790 I looked into that but seems easier to inject directly in OpenCore (sorry I didn't read the full thread so maybe was mentioned in there) I added this into my config.plist: (underclock to 1799Mhz which also was listed in LuxMark test)
<key>DeviceProperties</key>
<dict>
<key>Add</key>
<dict>
<key>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)/Pci(0x0,0x0)</key>
<dict>
<key>@2,AAPL,boot-display</key>
<integer>1</integer>
<key>PP_DisableClockStretcher</key>
<integer>1</integer>
Code:
<key>PP_DisablePowerContainment</key>
<integer>1</integer>
<key>PP_DisableULV</key>
<integer>1</integer>
<key>PP_EnableUploadFirmware</key>
<integer>0</integer>
<key>PP_Falcon_QuickTransition_Enable</key>
<integer>1</integer>
<key>PP_GfxOffControl</key>
<integer>0</integer>
<key>PP_PhmSoftPowerPlayTable</key>
<data>
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
</data>
<key>PP_PhmUseDummyBackEnd</key>
<integer>0</integer>
<key>PP_ToolsLogSpaceSize</key>
<integer>524288</integer>
</dict>
</dict>