The CA Spectrum WLC auto-discovery functionality is triggered due to AP and WLC configuration changes and the subsequent triggered connection discovery is addressed to too many devices.
This applies to all supported CA Spectrum platforms - and is seen for CA Spectrum R10.1* and R10.2.*
As a workaround to disable "Discovery Protocol Tables" setting to "No" under VNM-model / Component Details / Information-Tab -- subview "AutoDiscovery Control" -- here "Modeling and Protocol Options".
CA Spectrum R10.3.1 now covers improved WLC_discovery logic _ which will avoid "finding too many devices" doing a brut force connection discovery.