I have a Canon Pixma MG6450 connected through the wireless network to my Ubuntu 21.04 system. The driver was downloaded from Canon's website. It uses a bash script to install itself.
Printing is very slow, at about 1 page per hour. The same document can be printed from my Windows PC in less than a minute. This delay seems independent of software: it's very slow whether I'm printing a PDF using evince, a diagram created in Gimp, or a bash script printed from gedit.
What steps can I take to diagnose where the bottleneck is?
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