AVG Antivirus Free impede internet connection

Hi Mattia,

This isn't the experience we want you to have.
Please let us know if you've checked the issue by connecting to a wifi or other networks (mobile hotspot).
Does this happen in all browsers or a specific browser. Would you be so kind to share us the screenshot of the message that you receive?
Also, let us know the operating system of your computer, version of AVG installed.

Hello, I am experiencing connection problems when running AVG Antivirus Free edition. Whenever I activate Web protection my connection usually drop, showing a failed to reach DNS.

I am connected through a LAN cable and experiencing this issue only when AVG is active. Disabling the antivirus immediatley restores the connectivity. 

I hope you can help me solve the problem as it is really hindering my capacity to properly operate my PC.

Here is a screen with the settings (unfortunately the language is Italian, but I hope it's not a problem)

User-added image
Thank you for the info, Mattia. 

We have sent you an email with the link to get connected with our technical team, please follow that email and you will be able to resolve the issue. 

Hi Mattia,

This isn't the experience we want you to have.
Please let us know if you've checked the issue by connecting to a wifi or other networks (mobile hotspot).
Does this happen in all browsers or a specific browser. Would you be so kind to share us the screenshot of the message that you receive?
Also, let us know the operating system of your computer, version of AVG installed.

Hello,

thank you for yor prompt reply. I can only connect my desktop PC to the internet via LAN, as it has no WiFi receiver. However, I doubt the actual connection can be the problem. It happens on any browser I use regularily (Firefox/Chrome) and also on Edge. 

After futher testing, disabling "QUIC/HTTP3 scanning" seems to solve the issue, I have no more loss of connection/DNS. I also tested AVAST free with the same results/issues. Would it possibile to solve the issue without disabling protections?

My OS is W10 Pro (1903 - 18362.295)
AVG version 19.7.3103 (build 19.7.4674.526)