Some things to consider: (Especially with 60 cameras)
-You may not want motion alerts on every camera at all times. For instance, the camera that watches our back door does not have motion alerts during daylight hours, since wife and I go in and out that door all day long. It does alert after dark, when we are generally inside. Profiles and schedules are useful for this.
-Cameras with built in AI, like the 5442’s, can often do a better job of choosing when to alert than tuning settings in
Blue Iris
-You may need to use Deepstack on some cameras during the day, but not at night, or vice versa. I currently have 6 cameras (more on the way) but only run Deepstack on one camera during daylight (tree shadows) and a different camera at night(frequent spiderwebs and IR reflection in rain.)
Like
@sebastiantombs writes, it’s all highly camera/scene dependent. And with 60 cameras, unless you are monitoring a large, vacant facility, I’d think you’d want a number of those cameras recording ”just-in-case”, rather than most of them aler5ing on motion. But, I don’t know your use case.