Facing maximum session reached during mass printing

Hi Guys,

Off late facing this strange issue in our R3 system during mass printing. Whenever some users are trying mass printing they are getting error of "maximum sessions reached" with few prints.

Printers are configured with 'E' - Method

Process requests sequentially is ticked

SAP is on Linux env and print gets forwarded through LRS.

Further not all printer has the same probs.

Any help guys? Quite stuck in this.