You’ve got a good Internet connection and iCloud should be working fine, but won’t sync data between your Mac and devices. Could it be throttled?
throttling
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?
With a shiny new high-speed Samsung X5 SSD to test, I was looking forward to some real speed. Did it deliver good value for its high price, though?