Review on Amcrest 5Series 4K NVR 16-Channel NV5216: Record and View/Playback 4K @30fps with 16CH Capacity, Supports 2 x 10TB Hard Drives (Not Included) by Christopher Ruth

If you want to get rid of choppy live video streaming, this will help. I bought an Amcrest Nvr last year to use with my 8 4k cameras but I also need to use the HDMI output for the TV monitor around the house. When you connected more than 1 4k camera, the video stream was choppy and time out of sync. I've tried every Amcrest camera model and setting, but none of them worked. Now with this new DVR I have all 8 in 4k mode and it's perfect video streaming, no stuttering or lag.