By default, the print spooler runs at the same priority as other services. However, if you have a system that you use primarily for printing, you can increase the print spooler’s priority by performing the following steps:

1. Start a registry editor (e.g., regedit.exe).
2. Navigate to the HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print registry subkey.
3. From the Edit menu, select New, DWORD Value.
4. Enter the name SpoolerPriority, then press Enter.
5. Double-click the new value, then set it to 1 (0 is the default value).
6. Click OK.
7. Reboot the machine for the change to take effect.