We have two 5540 and one 5510 in production. Clients are complaining that they can not copy large files from the local workstation to a server through the vpn. We're using the SSL VPN Client and I have Datagram Transport Layer Security (DTLS)enabled. I also downloaded the Anyconnect client (anyconnect-win-2.1.0148-pre-deploy-k9.msi) and tried that with no luck. Downloading a 54MB file failed after about 40 minutes. Are there any other optimization features I should be looking at?