PDFCREATOR TS Single Threading

I installed PDFCreator TS on a W2012R2 Terminal Server.
It seems to be single-threading while a job is spooling/printing, holding up the other users.
Is there a setting that needs to be set to allow multi-threading?
I noticed that on the PDFCreator printer, it is set to 'Start Printing Immediately".
Should this be changed to “Start printing after last page is spooled?:”


I am afriad multi-threading isn’t available in the terminal server version (only in PDFCreator Server).
Regarding the printer setting, I think it is better to leave it as it is, changing it could decrease the performance.

best regards,