All,
Most of my cameras, I am getting this warning: Check FPS and Key Rates.  I am also getting "Bottleneck" warning.
On the Amcrest cameras (ASH43), under Video, I only have these choices.  (There is no web interface):
Resolution: 2K (2560*1440), 1080p, 1.3M or 720p:   I have it set for 2K...