Hi Emerson,

ist could also be an SMB2 issue. Try to Configue the registry parameters:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\system\CurrentControlSet\Services\LanmanWorkstation\Parameters] 
"DirectoryCacheLifetime"=dword:00000000
"FileNotFoundCacheLifetime"=dword:00000000
"FileInfoCacheLifetime"=dword:00000000

HTH
Greetings from Germany