Someone in another thread linked to this
I ran the two regedit commands and rebooted, and now went from 24MB/s, up to 105MB/s!
command window as Admin
reg add “HKLM\SYSTEM\CurrentControlSet\Services\LanmanWorkstation\Parameters” /v RequireSecuritySignature /t REG_DWORD /d 0 /f
reg add “HKLM\SYSTEM\CurrentControlSet\Services\LanManServer\Parameters” /v RequireSecuritySignature /t REG_DWORD /d 0 /f