(MOJAVE) RX 580 get black screen when starting editing Video or opening Games

Joined
Apr 15, 2019
macOS
10.14.4
Mobo
GIGABYTE Z390 I AORUS PRO WIFI
CPU
i5 8400
GPU
SAPPHIRE NITRO+ RX 580 8GB
#1
Hi Everyone,
I recently built my hackintosh using this guide: https://www.tonymacx86.com/threads/...gb-ram-sapphire-rx-580-mojave-10-14-3.271145/

I copied the BIOS setting and everything. It was a SUCCESS, and macOS Mojave run smoothly.. TP-Link tl-wn822n, Wifi USB dongle works (after installing tp-link driver)
BUT..
When I start to edit video using Final Cut Pro X or playing Steam games (Dota2), my screen gone black & display disconnected.
Then, I can't do anything. Have to hard shutdown (hold power button) to turn it off.
I connected my GPU using HDMI cable to 1080p single monitor.

This is my spec:
i5 8400
Gigabyte z390 i Aorus Pro Wifi
Sapphire Nitro+ RX 580 8GB
16GB DDR4 (2x 8GB)
TP-Link tl-wn822n

And below I included my EFI folder, please help me with this issue.

Thanks a lot.
 

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