Good afternoon! I have a DS 923+, 2 seagate ironwolf 4tb disks in raid 1 with data protection) there are also 2 SSDs, Samsung 970 evo plus for raid 1 cache, read and write for volume 1, when I download, say, an 8 GB movie, the write speed to synology drive is no more than 30 MB/s, I download...