My apologies, the first of the three screenshots was incorrect. I'm attaching the correct one this time. The parameter DLSS - Forced Quality Level should be set to Ultra Performance.
I managed to fix it.In NVIDIA Profile Inspector, you need to set the DLSS - Forced Scaling Ratio value to OFF.
My apologies, the first of the three screenshots was incorrect. I'm attaching the correct one this time. The parameter DLSS - Forced Quality Level should be set to Ultra Performance.