Running ISE 2.2 patch 1 on a VM, 2 nodes (1 primary monitor and PSN and 1 secondary) and a few weeks back the dashboard showing authentication latency started to rise from an average of around 30-50 milliseconds to around 200-300. No network changes have been performed.
Does this dashboard, since it's showing an average, also take into account the timeouts for failed authentications and those higher timeout values are increasing the average?
When I perform an auth test it shows the AD response time in the single digits in milliseconds but shows the "Group Fetching" time in the hundreds, could this be a factor?
While this is not currently affecting users I'm worried that once the client load increases that it might start causing auth failures.