HELP PC-LG C5 SDR absolute black VS HDR grey "black"

Could you help me? Here is my situation: I'm playing on PC on a LG C5 oled. When the screen is in SDR mode, *Resident Evil Requiem* displays beautiful, absolute blacks; however, if I enable HDR, the blacks turn gray—looking like an LCD monitor. No TV setting fixes it, and I’ve tried everything on the PC—calibrating everything possible—but nothing works. Does anyone know how to get those beautiful, absolute blacks while using HDR? It’s worth noting that HDR videos and browser images look perfectly black when Windows HDR is enabled; the issue seems to happen only in the game. I’ve also calibrated the HDR settings within the game itself.

HDR OFF

HDR ON