[fixed] Avast causing sound to flimmer / get weird clipping noises

Avast Free Antivirus / Premium Security
1

Information and system:

Windows 8.1, up to date.
Avast version: 2015.10.2.2214
Windows x64
16 GB of ram
Intel i7 Quad core CPU @ 3.6 GHz with hyper-threading
NVida GeForce GTX 765

I do have irritating issues when playing music from applications like Chrome, Spotify, Windows Media Player, etc. Those scratching sounds appears only when the Real Time Shields are set to “ON”. When disabling them for 10 minutes or more (disabled), I don’t have any issues with the playback quality and sound, and the scratchy noise is gone.
My specifications on the computer should manage to playback correctly, and i didn’t have this issue before.

I usually get the scratching sound if the system is under HEAVY load without the shields active, but when the shields are on, I do still get the sound. Even when idle.
I’ve monitored my CPU usage and different resources on my Task Manager, but there is no sign of high usage when Idling.

Is this fixable, or is this a bug/issue with Avast?
PS: I’ve been checking all drivers as well, for audio/video card and for the rest of my system.

Best regards.

2

I’m not getting those issues:

You may want to try a clean install (latest is now 2015.10.2.2215)

You need to perform a clean install:

Note: It’s important you used the stub online installer from the one I linked… NOT the offline one.

Note: You need to be ONLINE during this install (online installer works in all cases whereas offline sometimes doesn’t)

1.Download your version of avast! and the avastclear tool:

Avast Free Antivirus
Avast Pro Antivirus
Avast Internet Security
Avast Premier

Download Avast Clear Tool

  1. Uninstall Avast by control panel [If you don’t have Avast in control Panel go to #3]
  2. Uninstall in safe mode using Avastclear. [Running Avastclear is normal mode will give a prompt to go into Safe Mode]
    Check : Once uninstalled check in device manager>view>show hidden devices if there is anything related to avast with a yellow triangle… if so, uninstall it and reboot.
  3. Install the version you downloaded.
  4. Reboot.

Free: If you have the Free version, register the product for free for a year from the avast! UI.
Paid: If you have a paid license, insert the license key/activation code after the reboot at stage 6.

If you have any questions, please don’t hesitate to ask. It’s better to ask than make a mistake and start over again with the process.

3

Oh thanks for the support!
Amazingly enough i did the upgrade from the Avast UI, before i read the post you made, because I had to make sure everything was up to date.
The new update solved the issue, it seems.

I’ll follow this if the issue re-appears. So far, it seems all fine.

Regards