Suddenly, extremely long file copying times!
My iMac, running Monterey, has suddenly developed a serious problem: copying files from the iMac to any external drive takes incredibly long - i.e., copying say a 2.5 GB film which once copied in under a minute can now take between 4 hours and 45 minutes (the estimated time suggested can fluctuate wildly). I have made the usual duffer's moves such as restarting everything and running Disk Utility First Aid, without any success.
Suggestions?
iMac 27″, macOS 12.7
