We are having issues with some of our RAP users getting dropped from their VPN connection, some chronically. We have an internal VPN that we have to connect to in order to reach our internal management network. We use the Cisco AnyConnect client for this. The connection to the Corp SSID that the RAP is broadcasting appears to be stable, it's just the VPN connection they use after connecting to the Corp SSID that is having an issue.
Not all users are reporting this problem. I personally have never had it happen to me, but others it's so bad they had to ditch the RAP and just use the AnyConnect to get in that way via another path.