I Have a new NVR RLN8-410 with the latest firmware that really lags bad. Video is very choppy also, I have 500mbs speed. Is there any settings I can change on the NVR to make the camera veiwage smooth?

I have a RNL8-410. It shows 12 channels/cameras in the menu and I can get 9 cameras to show up on the monitor. How can I get the remaining channels to show up?
I have 1 Wi-Fi camera on the 9th channel.

So I have a system at my work that has Comcast/ Xfinity as the internet provider. I have a system at home that has T-Mobile as the internet provider. If i'm at work I can't connect on wifi using the 2.4 or 5 internet but when I switch it to the free xfinity wifi it works. Have no ideas

I can no longer view my cameras on my iPhone when i'm away from my home. I just changed to T-Mobile internet so i'm assuming that's the problem. Any suggestions???