I have setup a new windows 2012 r2 essentials server for 10 users, it is a print and file server along with being the DC, dhcp and dns for the network.
I added the last 4 machines onto the domain this afternoon and all of a sudden the speed of accessing the shared folder is awfully slow, it can take 5 minutes to open a folder and opening pdf and word documents can cause a crash.
All machines are windows 7 except one old windows xp machine.
I have tried using name and ip, disabling smb2, disabling ipv6.
It has 2 x 1gb network cards bridged using ip and dns 192.168.0.10 (itself) and gateway 192.168.0.9 (draytek router).
Memory is 20gb and drives are 2x1tb, everything looks fine in task manager.
Any advice or guidance would be much appreciated