[HELP] DisplayPort won't work after booting.

Guys, I'm racking my brains with a Displayport output from my video card, if I connect the cable together with the HDMI to use 2 monitors, the screen turns off as soon as the Apple bar starts loading, if I connect ONLY with the HDMI plugged in It works fine, and I can connect the Displayport later and use the second monitor, I'm even using it normally on Win (just to say that it has been tested and is working). I'm running Monterey with the 1060 activated by OCLP (is that it? I never remember). I'm Using SMBIOS iMacPro1,1, and tried iMac18,3 without success.

HP Pavilion Gamming Desktop TG01-2070:
Processor: HexaCore AMD Ryzen 5 5600G, 4400 MHz
MoBo HP Pavilion Gaming Desktop TG01-2xxx (Erica 6)
Chipset AMD B550, AMD K19.5 FCH, AMD K19.5
iGpu 3D AMD Cezanne (inactive)
Discreet 3D nVIDIA GeForce GTX 1060 3GB
Sound Realtek ALC671 @ AMD K19.5
Sound nVIDIA GP106 HDMI/DP @ nVIDIA GP106
Sound ATI Radeon HDMI @ AMD K19.5
SSD PC711 NVMe SK hynix 512GB (476 GB)
Network Realtek Gaming GbE Family Controller (10.0 )
WiFi Realtek RTL8822CE 802.11ac PCIe Adapter

Any clue, please?

submitted by /u/LuizOrlandi
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