Success but long delayed backlight (laptop)

Got nearly everything working cleanly on a Dell Insprion 5300 (~2019) except on boot the backlight takes a good 1-2 minutes to come on. In a brightly lit area I can barely see the ghost image of what is on the screen and can even log in and see desktop but the backlight takes some time to fire up.

I have the latest versions as of a week ago of relevant packages for Dells. I have not changed DVMT-prealloc since it is still Dell locked bios if that has anything to do with it. I think not since it is just a backlight issue. I want to make sure everything is spotless before I stop booting from USB opencore

Specs:
Inspiron 5300
Intel 8665u (Whiskey Lake)
Intel UHD 620

File Tree:

ACPI

  • SSDT-EC-USBX-LAPTOP.aml
  • SSDT-PNLF.aml
  • SSDT-PLUG-DRTNIA.aml
  • SSDT-XOSI.aml

Kexts

  • AirportItlwm.kext
  • SMCBatteryManager.kext
  • AlpsHID.kext
  • SMCDellSensors.kext
  • AppleALC.kext
  • SMCProcessor.kext
  • BrightnessKeys.kext
  • SMCSuperIO.kext
  • CtlnaAHCIPort.kext
  • VirtualSMC.kext
  • ECEnabler.kext
  • VoodooI2C.kext
  • IntelMausi.kext
  • VoodooI2CHID.kext
  • Lilu.kext
  • VoodooPS2Controller.kext
  • NVMeFix.kext
  • WhateverGreen.kext

I'll try and attach Config PLST in comments

submitted by /u/musicims
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