We are on Server 2016, with about a dozen Windows 10 PCs. We just moved offices so our wiring, switches, etc. are brand new (before they blame network issues). 

RE: Client number sort: I get the impression from THIS and THIS post that this isn't an error but a choice, one that hasn't been communicated to the userbase in any way (checked the "what's new" document and attended the Lacerte update seminar). If it is by choice why not tell the userbase that they were changing the sort way?