I decided to take more than a cursory look at the functions called and it turns out higher up the chain there is a reference to DeltaTime, but it’s passed into the function APlayerController::UpdateRotation( float DeltaTime )
and that’s called in player tick, just to verify it does pass in actual DeltaTime, and it seems it does. Unsure of why this isn’t applied down the line if the input gets processed with DT.