Seagate M3 HDD USB 3.0 portable too slow (or not).

[brigantium]

My Seagate M3 HDD USB 3.0 doesn't get past 32MB/s copying files (trying with 30-40GB files) on a clean an updated Windows 10 installation after trying (less) obvious 'fixes' and BIOS settings from dozens of people on different forums. However, if I use HDDTune, CrystalDiskMark multiple benchmark methods the read and write speeds are always ~110MB/s for that amount of data. Is there any explanation for this?, if so, is there an actual way to fix it?.

It's connected to a back USB 3.0 port (ASUS MAXIMUS IX CODE motherboard).

 

[brigantium]

Yes, the other drive is a SSD. I have made some more tests and for some stupid reason the 'Optimize Drives' service is set to Manual, which has a huge impact on everything but benchmarks. After setting it to Auto I reach 110MB/s both ways.