So I finally reinstalled IE so I could see what the difference was in the UI.
I added the address in Edge "settings > default browser > Internet Explorer mode pages" then I clicked my shortcut for the webui, had to install some plugins then allow them to run (it got them off the NVR not the web so cool there). Then I had to close and reopen the browser to get rid of "login" on the live view screen, and now I see some stuff I do not see when using the Webui in edge.
Short story, all the download recording buttons appear in IE mode. They do not in Edge.
IE mode in Edge for WebUI
IE mode in Edge for WebUI
Amcrest NVR4108E
5 Amcrest IP5M-T1277E-AI Cameras
2 IP8M-2779E-AI Cameras
Edge in IE mode for WebUI
5 Amcrest IP5M-T1277E-AI Cameras
2 IP8M-2779E-AI Cameras
Edge in IE mode for WebUI