It's not clear where you are seeing an incorrect time, do you mean on the camera feeds themselves? If so I believe the time shown on the camera on-screen display comes from the camera and not necessarily the NVR. However, I have found what works for me in the UK is:
1) Setting the NVR to use NTP and DST (exactly as David's second screenshot shows - the original screenshot DST settings I don't think are quite right).
and
2) Setting all cameras to the correct (GMT +0) timezone and use NTP. I do NOT set or enable DST on the cameras themselves.
This way the cameras seem to change DST correctly based on the NVR DST settings.