I have a Canon mf4880dw which sometimes slows down when making multiple copies. This is not a wireless issue (as I have seen in some discussions on this bulletin board), since I am using the copier function, not the "printing from computer" function. No error messages appear, and the toner is not low. I have not been able to zero in on when this happens, but it is frustraingly slow when it does happen. Any ideas?
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