Lightroom Classic is very very slow with Avast Premium

640 / 5 000

Hello.
As soon as I want to go back to a mask I’ve already created or duplicate a mask by inverting it with Lightroom Classic (on Windows 11), Avast Service goes from 0% CPU to 10% CPU. Similarly, if I export a photo from Lightroom Classic, it takes 1 minute and consumes a lot of Avast. When I was using Windows 10 and Avast Free, it worked perfectly. With Windows 11 and Avast Premium, Lightroom Classic runs very, very slowly. Is there a solution or how can I exclude Lightroom Classic from Avast’s scan scope?
Thank you in advance for your feedback.
Alain