new Fenvi T919 wi-fi keeps turning off and on (Opencore0.5.9, OSX10.15.6, Asus Prime Z390-a)

Hardware:

• CPU: 9600K
• GPU: Navi10 Sapphire Radeon Nitro+ RX 5700 XT 8GB GDDR6 Special Edition
• RAM: 32GB 3200 DDR4
• Motherboard/Laptop model: ASUS Prime Z390-A (BIOS 1502)
• Audio Codec: ALC1220
• Ethernet Card: Intel I219-V
• Wifi/BT Card: Fenvi T919
• What guide/tool followed: https://dortania.github.io/OpenCore-Install-Guide/
• What files/config I am using: https://drive.google.com/file/d/1ivOIdV6BSjr9n2UJjNBgkhnaFn_8UNAn/view?usp=sharing
• Extra Info: [Add something you need to point out about your setup]

Software:

• Catelina 10.15.6
• Opencore 0.5.9

Problem:

Once booted, WIFI (top right corner icon) keeps turning on (for about 5 seconds) and off while BT works as intended.

My build was working flawlessly until one day I decided to add a Fenvi T919 wireless card which is supposed to work OOB. It works good for Windows on the same machine, but WIFI not working on Hackintosh.

The device is detected in system report.

I have tried:

• Windows. Both BT and Wifi works good on windows.
• Switching to other PCIE ports, x1, x4, x8. Same result.
• BIOS: turn off all the PEG/PCH/DMI ASPM settings. Same error.
• Disable "Wake for Ethernet network access ". Same error.
• Test in Recovery, Same error.
• Reset Nvram, Same error.
• Tried with and without AirportBrcmFixup 2.0.8, Same error.
• Boot on Opencore 0.6.0 and a set of new plist, Same error.

Please kindly help... I don't know what else can be done..