Derek,
The spooler settings are choices in the printer driver and actually in Windows territory. If you go directly to printers faxes settings and to the advanced setting of a driver's properties menu you can make that the default and it will stay the same for any application you print from. Do you have two drivers installed for the same printer?
That there is a difference in output between the two settings is wrong but it doesn't surprise me.
In the driver's properties menu 'Print Processor' via the printers faxes settings the z3100 Default data type is set on 'RAW". Print processor was set on 'hpipp6fg', I have now changed it to hpzpp5nn. This is the 1st time I have gone into the 'Print Processor' menu and changed any of the settings in there. The print processors list shows 7 listed, MS_XPS, hpzpp5nn, hpzpp5i3, hpzpp40m, hpzpp054, hpipp6fg, WinPrint.
I only have the one driver (61.101.366.41) installed for the printer.
Derek