The dude is trying to collect too much information from your switches. Start a new installation of the dude, set the polling probe interval up to 5 minutes and disable all auto discover, also under settings, misc, change Mac Mapping refresh interval unset resolve mac address manufacture. Set arp discovery to 24 hours. Do not modify anything on the chart tab. Manually add one switch add some services and see how it goes from there. If everything is stable reduce your polling to 1 minute if cpu spikes you are grabbing too much data with your services, eliminate any services you don’t really need.