Hello,
Looking a your current CPU usage, you current machine will unlikely be able to handle 16 cameras. You can find another setup of a user who is running 25-30 cameras at the post below:
topic12977#p19125You can also find more example at the bottom of the link below:
https://www.sighthound.com/support/system-requirementsResolution is a factor here as well. The CPU usage will rise exponentially as the resolution grows, and will depend quite a bit on the amount of activity in the scenes as well.
To emphasize, CPU is just a part of the story here. Storage, and potentially, network equipment may prove to be just as critical to the success of such a deployment. Stability and quality of the cameras will also be important.
I hope that helps. Please let us know if you have any other questions or concerns, thank you!
Regards,
-Kevin