I bought this DW1560 Card off AliExpress.
It was working just fine with Mojave and older versions, but with Catalina Wifi takes 3 minutes to bootup. And on the other hand BT is just fine.
I tried the new BrcmPatchRAM3, doesn't make any difference.
Here's detail from Hackintool:
Sapphire RX 580 Pulse user here.
Had the same black screen issue, added new WEG 1.3.4 in the Clover EFI drive and updated to Clover 5097
Kinda same happening with my HD7750. Output is working just fine with HDMI, DVI connected display is detected but black screen, I'm on 10.13.6 currently and already ordered one Display Port cable off amazon.