10130 is a slow install at the start then speeds up.
This is just doing the reset (as if to sell). The S3 was unable to perform an install of 10125 from a usb stick. Wouldn't even get to the install boot screen. Just did it's initial restart, then sat at the surface logo with the spinning dots for 15 minutes before booting into 10074. Definitely a device that is slow enough that it should just be left well alone.