With the Intel PresentMon app overlay active in-game? Because I get that behavior too with my PG27AQN with DSC + 4090 (no MPO).
However, if I disable the PresentMon app's in-game overlay, and switch to the PresentMon readout preset via RTSS, I get "Hardware: Independent Flip." SpecialK reports "Hardware: Independent Flip" for me as well.
The PresentMon app overlay is probably preventing "Hardware: Independent Flip" when DSC is enabled and MPO is not available, similar to the other overlays @RealNC mentioned earlier in this topic.
