Can you get Time Machine to back up faster by turning I/O throttling off? If so, it this something to do only for large backups, or can it be set as the default? Does it also affect other background processes?
Is it overhead from sandboxing, the file system, the throttling of I/O, or the limitations of the Efficiency cores? Is there anything a user can do?
From the IBM PC XT with its 10 MB hard disk to a SoC which moves data to its SSD at over 7 GB/s. How CPUs interface with peripherals.