Hello,
According to SAP Note 128105 - Front-end printing (collective note), mass printing is not supported on fronted:
"Since front-end printing uses the local GUI connection, it is generally unsuitable for the output of large or particularly time-critical documents."
Please check on the following documentation:
http://help.sap.com/saphelp_nw74/helpdata/en/4e/5d59f5719b4db0e10000000a42189b/content.htm
You may also want to check SAP Note 10758 - SAPSprint cannot be reached. What can be done?:
"We urgently recommend that you operate these boxes only from the host spool, as this has more time and resources available. Therefore, set the output device in SPAD with access method 'L' or 'C'"
Best regards
Melinda