Windows 10: Horrible transfer rates for USB 3.0 storage . Help! I tried everything on the MS forums ,...

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:)

 

Extremely slow USB 3 HDD transfer rate on one PC but not the other

I have this Transcend Storage Jet external HDD. I was using it with my desktop Win 10 which supported USB 2.0. The transfer rate was satisfactory over 15MB/s. However, when I tried it on my new Lenovo ideapad 510 which supports USB 3.0 and using its USB 3.0 port, the transfer rate is going at a few 100 KB/s.

The copy window seems to pause a long time interval and only updates the speed and progress bar for just 1 frame every so often. Below is the CrystalDiskMark of this drive:





I've also tried the USB 2.0 ports on my laptop. The results are similar except for SeqQ32T1 and Seq which achieved > 30 MB/s

I've tried the following methods.

Disable Quick Removal Method

I've tried the most accepted answer of this: Extremely slow USB transfer speed but the problems are:

1. It doesn't work
   
2. My old PC also does quick removal and there was no transfer problem.
   

TeraCopy method

However, using TeraCopy, the speed can achieve 32MB/s with the USB 2 port on my laptop. But this is just avoiding the problem, not actually solving it. Actually, the result is exactly the same using Explorer to copy.

 

Disk Active time 100% Disk transfer rate 0

This is a problem I've seen reported countless times, on Microsoft support sites and elsewhere. Task Manager shows "Disk Active time 100% Disk transfer rate 0", and everything that's running on the computer freezes, although sometimes you can switch windows,
or even perform some operations within a window, but other times
everything freezes, including the mouse pointer. It usually lasts for 30 or 60 seconds, but sometimes it goes on for several minutes. Then it stops and everything goes back to normal, including Disk active time and Disk transfer rate.

It happens regardless of the apps I'm running or the activities I'm doing. I've even seen it happen with no user apps running at all - no browser, no file manager, nothing but background stuff. It happens every single day, regardless of whether there has
been a Windows update installed.

Microsoft gave me a fix for this problem a week ago, but it didn't work. Here are the steps I followed:

at admin command line prompt:

• Get-AppXPackage | Foreach {Add-AppxPackage -DisableDevelopmentMode -Register "$($_.InstallLocation)\AppXManifest.xml"}
• dism /online /cleanup-image /restorehealth
• reboot
• find driver file for Intel(R) 9 Series Chipset Family SATA AHCI Controller
  • C:\WINDOWS\system32\DRIVERS\iaStorA.sys
• Details tab from Properties window for controller
  • Device instance path:
    • PCI\VEN_8086&DEV_9C83&SUBSYS_06B01028&REV_03\3&11583659&0&FA
• find registry key for disk controller
  • Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\PCI\VEN_8086&DEV_9C83&SUBSYS_06B01028&REV_03\3&11583659&0&FA\Device Parameters\Interrupt Management\MessageSignaledInterruptProperties
  • change MSISupported from 1 to 0
• reboot

The instructions I was given include this for Step 4: If you see “StorAHCI.sys” in the list, you are running the inbox driver. But my driver is iaStorA.sys, so maybe this
fix doesn't even apply to me.

After doing all of the above, twice, I still have the problem. I've seen this now over a period of about three years, on two completely different laptops, one a Toshiba running Windows 8.1 and currently on a Dell running Windows 10. I also have a Thinkpad
for work that runs W7, and I've never seen it happen on that machine. It got so bad on the Toshiba that I ended up discarding it, after spending countless hours trying to fix it.

I've also tried all the fixes I've found on the web, e.g. disable superfetch, disable BITS, add write permissions to Skype and the browser. Nothing I've found so far has helped. I also reverted Windows back to build 1703. That didn't help either.

 

Slow transfer rate with USB 3.0 external HDD

Nice suggestion, I had not tried this experiment yet, also because the only two USB 2.0 ports that I have are used by the mouse and the keyboard.

Anyway, on USB 2.0 the external HDD works very well, it has a slower transfer rate but it works. So the problem is related to
USB Attached SCSI protocol on USB 3.0 port. What can I do now?