Asus ZenBook UX501VW HDD Low Speed

I've got an Asus ZenBook UX501VW with 1TB hard drive as smartctl -i /dev/sdb introduces it:

    smartctl 6.5 2016-01-24 r4214 [x86_64-linux-4.4.0-59-generic] (local build)
    Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

    === START OF INFORMATION SECTION ===
    Device Model: ST1000LM035-1RK172
    Serial Number: WCB0HALD
    LU WWN Device Id: 5 000c50 09be76a03
    Firmware Version: SDM1
    User Capacity: 1,000,204,886,016 bytes [1.00 TB]
    Sector Sizes: 512 bytes logical, 4096 bytes physical
    Rotation Rate: 5400 rpm
    Form Factor: 2.5 inches
    Device is: Not in smartctl database [for details use: -P showall]
    ATA Version is: ACS-3 T13/2161-D revision 3b
    SATA Version is: SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
    Local Time is: Tue Jan 31 05:11:02 2017
    SMART support is: Available - device has SMART capability.
    SMART support is: Enabled

But the problem is that R/W processes are very slow and time-consuming even when I wanna open the drive, it opens with some significant latency.

The output of sudo iotop -P is as follows (after sort):

https://i.stack.imgur.com/haPSi.png

I'm using Ubuntu 16.04.1 LTS and I've formatted it as NTFS drive.

I want to know whether the disk has flaws or ubuntu 16.04 has got some incompatibility with it.