The only time I had Total Commander stop a copy like that was with bad usb hubs/drives that can't sustain fast writes and need to be down throttled. This is th

The only time I had Total Commander stop a copy like that was with bad usb hubs/drives that can't sustain fast writes and need to be down throttled. This is the reason why tcmd has option to change how it handles drives, the size of the chunks it reads and writes, and the speed at which it does it.