I used Netcam Studio with 4 cameras on an old Q6600 running with Server 2008 R2 for quite a while without problems.
Of course CPU load was quite high.
So I changed Netcam Studio to a Xeon E3-1245v5 running with Server 2016 (new installation of Netcamstudio)
The CPU load is quite low (about maybe 15%) when I start Netcamstudio.
But after a while it increases in steps.
Suddenly it’s 25% and then after a while it’s over 95%.
Sometimes this takes days, sometimes just some hours.
Closing and restarting Netcamstudio fixes this again.
The same happens when I use Netcamstudio as service.
I collected some logs of the last run (4 days) and some diagrams.
The pink curve indicates the CPU load which at the end is very high.
The logs and diagrams can be found here Logs