I also looks like you have a bunch of devices paired as "SO" - this can impact your network as that security scheme is a lot more "chatty" i.e. sending a lot more messages which can bog things down.
Unfortunately there is no easy way to pair those devices without SO unless you purchase a separate Z-Wave usb stick like a SiLabs UZB-7 and use their free Z-Wave PC Controller Software.
A usb stick can also help remove ghosts when the HE method becomes problematic.
