OK, that is an older machine, so substreams and optimizations are basically required. You could be on the verge of one more camera and the system is unstable. Sounds like your machine is CPU maxing out. But if it isn't then rollback to a stable version.
If you post the BI camera status page, we can see how critical of a need it is for you to optimize. Don't worry, the IP address shown in that screenshot will not give anything away.
You can list the private LAN IP addresses as it does not tell anyone anything - they are the same as everyone else. The IP address of your service provider for your WAN is what you don't provide...Everything on the inside past the modem is fine to put out. Everything on the inside, the local will fall under these ranges and you are not telling anyone anything about how to hack your system providing these ranges (basically any IP that starts out 10. or 172. or 192. are reserved for the "home side" of the service so every home internally will be within this same range):
10.0.0.0 – 10.255.255.255
172.16.0.0 – 172.31.255.255
192.168.0.0 – 192.168.255.255
Blue Iris uses a lot of CPU time. In most Blue Iris installations, your CPU is the limiting factor which determines how many cameras you can have. As such, it is extremely important to optimize your configuration to ensure you can get the most out of your system while consuming the least...
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