NO 4K@60Hz on Catalina 10.15.1 with UHD 630?

Hi. A week ago i entered the world of hackintosh and was so amazed that i decided to build one by myself . So here we are. I finally "succeed" into. But i encounter some problems and will like you to help me solve them.

Hardware informations:

- Motherboard Model: Gigabyte Z370N wifi

- CPU: Intel i5-8600T

- GPU: Intel UHD 630 (No dedicated GPU)

- RAM/SSD/Monitor/Accessories (photo)

Software informations:

- Installed Catalina 10.15.1 no dualboot

- Method: Internet install from https://internet-install.gitbook.io/macos-internet-install/

- config.plist (photo)

Problems encountered:

- Audio internal not working. (Now using a bluetooth Edifier speaker)

- Display output (All cables are the original ones which came with my monitor AOC U3277WB 4K)

1- On Displayport: NO 4k available. Max resolution on 1920 x 2160 (now using 1080p)

2- On HDMI 2.0: NO 4k available. Max resolution on 1920 x 2160 (now using 1080p)

3- On HDMI 1.4: NO 4k available. Max resolution 1080p (screen is pink!!! i dont care. will like to use DP or HDMI 2.0)

note: Before installing 10.15 , I installed for a test windows 10: the displayport is 4k@60hz capable and the hdmi is 4K@24Hz capable

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Audio

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Configplist1

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Configplist2

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Configplist3

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Display

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EFI --> CLOVER

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EFI --> CLOVER --> KEXTS

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GPU

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Hardware

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Monitor configuration with Display Port

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System Info