06-14-2018 10:52 AM
Can‘t answer your question, but have you tried to restart the controller?
For a deeper understanding on how WiFi works.
Certified UEWA, ACSP, ACTC
06-14-2018 11:17 AM
Have you tried to disable and enable DPI? How is the disk usage on the controller machine?
06-14-2018 11:30 AM
Could you show us the logs of the controller?