Is it happening with all operating system? or any particular devices?

Can you please let  me know what kind of performance issue will be there if i exceed above 5 or 10  or set it to 70?

ruckus>en2)ruckus#config3)ruckus(config)#wlan 'your wlan id'The WLAN service 'your wlan id' has been loaded. To save the WLAN service, type 'end' or 'exit'.4)ruckus(config-wlan)#5)ruckus# qos directed-threshold 706)ruckus# exit ( type this to save th...

Try setting qos directed threshhold to 70 and check  form controller.