The length of time taken to scan a document is proportional to the scanning DPI resolution set, so while 100 DPI scan should be fairly quick 1000 DPI scan would be exceedingly slow, perhaps this is the best place to start investigating ?
The Evil Within 2 review-in-progress
InVision Studio takes on Adobe XD and Sketch
iPhone X news: Release date, price, new features & specs
Comment transformer un iPhone en borne Wi-Fi ?