Fixed all my problems.
1. Make sure camera are sending a H.264 substream. I converted my substreams to mjpeg and this does not work with the Super mini NVR.
2. Lower the quality of the substream, this is what the multi display uses.
3. The Super Mini NVR always uses the last format you set your main and substream to. So logon to the substream and logoff on a VGA stream. Logon to main and logoff a HD stream.
4. Don't try to update the firmware it will probably just end up bricked.
5. Anytime your cameras are acting weird log onto the streams and reset them as mentioned in no.3 above.