I have a DS-7616NXI-I2/16P/S NVR with the latest v5.04.070 build 250828 firmware. It's recording 9 * 4k cameras (mix of Hikvision and Annke) which are connected to a PoE HP/Aruba switch, not the built-in PoE ports. I also run Frigate which takes main and substream feeds from each camera.
This...
