Problem with Imou Wifi NVR and Imou cameras

[grga]

Hi,
I have few question for you.
I installed Imou wifi NVR 8ch, a 4 x Imou 2c f42 4mpx cameras, hdd wd purple 1tb.
Question:
1. Why is time different on cameras( 2 cameras have same time, but other 2 late about 10 sec or more)?
2. What can cause that one camera frequently lost video, on nvr and on imou mobile app, sometimes is offline, but signal strength is full, and late when in online(not black screen), I can playback recording from that camera In time when it was offline(record when "offline")?
3. When watching playback onTV, 2 cameras have video but for other two it says "Over decode abillity"?

Please help

 

[wittaj]

Wifi cameras are notorious for frequently lost video.

Over decode ability means you have exceeded the capability of the NVR.

Just because the NVR is rated for 8 channels doesn't mean it can actually accept 8 cameras based on settings.

You can lower the resolution, bitrate, and FPS to get the cameras under the decode capacity.