[SOLVED] DPC latency is too high due to the storport.sys (audio pops)

[dubreuia]

Hi,

I'm sorry to post yet another thread on DPC latency, but I tried everything I could find in this forum and nothing works.

I have a new machine, fresh install of windows 10, and I have an external sound card connected though firewire (focusrite saffire pro 40). I have updated all the drivers to the newest versions, deactivated windows background stuff, no antivirus, power management to performance, etc.

I'm only using the machine for sound production (ableton live)

Here is the latency moon report and screenshots.

Thank you very much for your help

View attachment latency-mon-01.txt

 

[writhziden]

Can you open Device Manager and show what tabs are available for your firewire device properties (right click the device, and choose Properties)?

 

[xilolee]

Hi dubreuia (and writhziden). :welcome:

Are you using firefox 52.0.2 x64 (or x86)?

I have updated all the drivers to the newest versions

How did you update them?
Did you use special third party software?
Or did you use only Microsoft device manager and intel driver update tool?
Or did you check Gigabyte GA-Z270XP-SLI (rev. 1.0) support - downloads (click) for new drivers?
(There's also a new beta bios, though I won't update it: you could try to use it as a last resource.)
The mentioned file ohci1394.sys isn't available on windows 10 (at least, it isn't present in my machine).
Was that installed by Saffire Mix Control 3.7?
Are you using Saffire Mix Control 3.7?
Saffire PRO 40 manual says:

FireWire Driver Latency (Settings Menu)
The Saffire PRO 40s latency performance will be dictated by the Core Audio buffer size specified in your DAW (Mac,) or as set in the ASIO buffer size (Windows).
The Firewire Driver Latency affects the performance of the Core Audio or ASIO buffer settings.
If you are experiencing clicks and pops or audio dropouts, this may be due to certain hardware in your computer that is affecting the performance of audio devices connected via FireWire.
Rather than removing and replacing hardware (e.g. your graphics card or wireless internet card) trying a longer Firewire Driver Latency setting may solve the problem.

 

[dubreuia]

Hey guys thanks for the help!

I found the issue last week, the Samsung NVMe driver version 2.1 was the problem (that's storport.sys). Uninstalling it and reverting to standard windows driver fixes the issue.

Version 2.2 that was released last week might fix the issue, I haven't tested yet. I now have ****** read / write speed but I don't care all I really need is the sound card.


Link to another thread citing the issue: Samsung NVME 2.1 driver and terrible DPC Latency | [H]ard|Forum


I'm leaving this here if anybody else have the problem.

You can mark this thread as solved.

 

[xilolee]

Glad you solved it! :hug:

But a problem remains: how is it possible you have ohci1394.sys in your system?
It seems it should be present in Win98 SE, WinMe and maybe in Win2000 and WinXP.
I have 1394ohci.sys in C:\Windows\System32\drivers, and I don't think they are the same file.