Greets long story short we had a power outage here and when the network came back online it would crash out to a flood of ARP requests.
This would lead to packet storm/network loop, but after careful auditing there appears no looping. I put an older 10/100 managed switch in instead of the gigabit switch that was acting up and it keeps the network up, however upon examining my wireshark readouts I've noted an STP error. I figure if I can fix the error I can switch back to the dumb+fast switch...
Here's a screenshot of a pre-STP network crash. 192.168.0.x doesn't exist on this network so that's kinda curious too..
I'd love to actually FIX this instead of simply solving the symptoms - thank you for your time! :D