If you have an all-in-one I would recommend limiting the SQL Server to 1/2 of the total RAM of the box. That should give enough for everything else to work properly. does the problem exist on the App Server itself, or from a workstation client? Also, do you have internet access from your app server. If not, then there are a couple of things that need to be commented out in the App Server Config file and DSS Config files. You should be able to find those in the CCS planning and deployment guide.