>>You have to disable oplocks on the pcs too. HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\MRXSmb\Parameters OplocksDisabled = 1
>>
>>It may all run faster on the windows 7 share if the clients and server use the same SMB version.
>*
>Ok, thanks. I'll try that, too. Although, I was under the impression that once SMB2 is disabled on the server, the workstation settings would be useless.

That may be so, but 1 - I want to be in control of what the PC is doing. 2 - I believe they may waste time attempting things unless you tell them. It must take time for each PC to attempt and fail to establish SMB3, then 2, then 1 with the server. Would be interesting to know if it helps.