smb2 max credits

This option controls the maximum number of outstanding simultaneous SMB2 operations
that Samba tells the client it will allow. This is similar to the
parameter for SMB1. You should never need to set this parameter.

The default is 8192 credits, which is the same as a Windows 2008R2 SMB2 server.

Registry Hive	HKEY_LOCAL_MACHINE
Registry Path	Software\Policies\Samba\smb_conf\smb2 max credits
Value Name	smb2 max credits
Value Type	REG_DWORD
Default Value	8192
Min Value
Max Value