4k DLSS takes something like 1.5ms to compute on a 2080ti IIRC, so the drop in render time has to be at least that to give any improvement. So it's quite situat

4k DLSS takes something like 1.5ms to compute on a 2080ti IIRC, so the drop in render time has to be at least that to give any improvement. So it's quite situational and doesn't help with for example when frame rate is high already. Ray tracing at high settings would be expected to be one of those situations though, so something might be just broken.