By default, it is set to Full Graph discovery, which means that on every monitoring cycle, the probe also publishes the entire topology every time. This can send an overwhelming number of probe_discovery messages.
With Partial Graph Discovery the probe will instead only publish a graph of "new and changed" inventroy items every monitoring cycle, and will only send a "full" discovery graph once every 24 hours, or on probe activation.
To implement go to raw configure via Shift + mouse right click > setup > new key > discovery_server_version > value > 8.2
The value does not have to match the discovery_server revision, as long as it is 8.2 or higher it will work.
The storage probes know to support partial graph discovery are: