Spooler Subsystem App High Cpu Usage. Why is my spooler subsystem app using so much cpu? As a result, it can consume some of your cpu’s power when printing your job.
Hit run and type ‘ services.ms c’. I was not printing anything at the time and i had no print jobs in the queue. Normally, the spools.exe process doesn’t use up many resources, unless there is a problem happened in the windows printing system such as buggy printer drivers or utilities, or a misconfigured printer.