Hi everyone, I'm using an iMac late 2013 with 1TB Fusion Drive. I run speed test with Blackmagic Disk Speed Test and get a result: 350MB/s write 650MB/s read Now, Im wonder how long you guys test the Fusion Drive to get the best result cuz sometimes during the test I see the read and write speed go up and down. Sometimes both go down to around 2xxMB/s. Is it normal? Thanks in advance!