"QUIC/HTTP3 scanning" slows down the loading of some websites

Hello!

Since about two weeks, loading some websites on a new PC (AMD Ryzen 9 9900X, Windows 11 Pro + AVAST free - always up to date) takes extremely long. No changes have been made to the settings of AVAST free so far. However, if you disable URL-Guard => QUIC/HTTP3-Scanning the pages load normally.

On another, older PC (with the same AVAST settings), the affected websites load quickly - even though QUIC… is enabled

How do I find the cause? Please consider that I am not an expert, so I need a step-by-step guide.

Thank you!

Check out this thread, it seems you’re not the only one experiencing this slowness issue with W11.

Thank you for pointing out this thread. :slight_smile: