Asus Z390 Gaming-H, Core i7 8700K, Sapphire NITRO+ RX 5700 XT,
Dual monitor setup (2 x Displayport)
Smbios : iMac 19,1 with iGpu only for computing (no displays connected)
Opencore : 0.5.9
Lilu : 1.4.6
WhateverGreen : 1.4.1
agdpmod-pikera in config.plist
After updating to Catalina 10.15.6...