I could not edit my previous post, so I would like to add here...
It seems, I can't add video to this post, bummer...
While I have sync checked for playback in the NVR, NV4108E-HS, the video has many issues, which include being out of sync, choppy and normal 1x play appears very slow play, weird....
If I select 'Extra Stream 1', a lower resolution, from the web browser interface, I can playback 4 streams, with the above issues. I can't playback more than 1 channel on the actual NVR, but when I can, it appears to play ok. It is set to the highest resolution, which is why I bought it, the cameras and a 4TB hard drive.
I hope these issues can get resolved.
Angie in Texas
1x NVR: Amcrest NV4108E-HS
4x IP Cam: IP8M-2597EW-4MM