I just installed a new server with a client and they appear to be experiencing some Network Latency issues as in files take seconds to open, the PC will frequently kick themselves into "Offline" mode, and there are so many components in play I'm little hesitant as to even know where to start, so if you all can help point me in the right direction....
New Server: Dell PE T320 2 x Broadcom NetXtreme Gigabit NICs (Onboard) Set in a Team. Virtual Ethernet Adaptor Switch configured with static IP used to connect to Host box. Connected Switch: (I do not manage this switch, and the company that does will no longer support.) Sprint 6124SX3 (connected to two ports) Fibre to two other Sprint switches in another part of the building. All of this will be replaced when the new Phone system is put in. The PCs are all connected to the network *THROUGH* the added port on the Shoretel VoIP phone. Nothing with the phone system has been updated in over 5 years. I used the Windows 2012 R2 Hyper-V Best Practices Checklist from the blog to setup the server and pretty much just went with the default settings. Internet is a slow antiquated partial T1, soon to be replaced. How do I figure out what is causing the access lag?

