Opencore on Intel 9600k and Rx 590.

Hello everyone! I have successfully built Catalina on my machine.

Configuration is: Intel 9600k Sapphire Rx 590 Nitro 8 GB Gskill DDR4 3200HZ 32GB Corsair VS550 power supply Gigabyte Z390 Aourus Elite

Everything works (using clover) fine with two issues. 1. One out of two monitors is pink (I could solve by changing color profile thorough monitor)

1. Boot time is way more

I thought to give a try to Opencore. I built basic config file of opencore using proper tree xml editor. Kept all standard kexts and drivers as per Opencore by following vanilla opencore guide. Actually I built this config using my clover config as a reference. I did not open my opencore config through clover. Now when I plugged USB to test opencore, USB boot goes blank with black screen . There are no errors or nothing. I am new to opencore and would appreciate your help in same.

Thank you!