Maximum brightness is still very dim on my Hackintoshed P52 Mojave

So I recently hackintoshed my Lenovo Thinkpad P52. Really the only thing that I can't seem to fix is the maximum brightness. For clarification, the brightness controls do work, but whenever I have it at maximum brightness, the display is still very dim.
I have tried to install AppleBacklightFixup.kext but this didn't fix my issue either.

My Thinkpad P52's 20MAS03M00 specifications:
Intel Xeon E-2176M
GPU: Intel UHD630 and Nvidia quadro P2000
RAM: 16 GB DDR4 2400MHZ
Display: 15.6" 3840x2160 (4K)

If anyone has any clue to what I can change to fix this, please help!

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Thanks in advance.