I would check for toner build up or a nick in plastic in entire paper path. Paper could be hitting and causing it to skew into Fuser but 1 out of 100 is gonna be tricky to troubleshoot. Make sure paper tray guides are nice and set properly.
I am having the same issue. Have replaced the fuser multiple times - final time with a new and genuine HP fuser. Also tried the Paper Delivery Assembly. Still crinkles pages randomly but seemingly more after it warms up.
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