atc.sys causes high CPU usage when opening Signal Desktop

CoDgerry

Symptoms:

"System" uses over 33% CPU when opening Signal Desktop. This is not happening with other known Programs on the system that are being opened on a regular basis.

How to replicate:

Open Signal Desktop.

How to check:

With Windows Performance Analyzer.

Outcome:

The atc.sys is (h)eating up the CPU ;)

My System:

Intel 13600k, 32GB RAM, Windows 11 Pro 23H2

I love Bitdefender, so no hard feelings, just wanted to report so you can check. Maybe it's just my system.

Gjoksi

Hello.

I think that the best option for you is to contact Bitdefender Consumer Support, as the support engineers could take a deeper look at the issue, so do the steps below.

First, take screenshot(s) of the issue

and create a log file on your Windows device using Bitdefender Support Tool, by following these steps:

https://www.bitdefender.com/consumer/support/answer/1733/

Next, contact Bitdefender Consumer Support by e-mail:

https://www.bitdefender.com/consumer/support/help/

with short description of the issue.

After that, you will get an automated reply by the Bitdefender Customer Care Team, with your ticket number.

Now, in reply to that automated reply, you can send the screenshot(s) you already took and the log file you already created in the first step.

Since you are all done, just wait for the support engineers to investigate your issue and find a solution to fix the issue.

Remember that the screenshot(s) and the log file will help a lot to the support engineers for better and faster investigation on your issue and finding a solution.

NOTE: If the log file is larger than 25MB, you can upload the log file here:

https://upload.bitdefender.net/

After the upload is done, you will get a notification with the file's URL and then you can share the file's URL with the Bitdefender Consumer Support.

Regards.