Hello @frederic.gaillard.7,
The "AcWebBrowser.exe" applications are helper applications for Autodesk products, taking care of web communication - they are based on the web (HTML) component "Chromium" (the same root as Google Chrome). These processes are used e.g. for the online Help, licensing mechanism, the Start (Home) screen, for the update tool Desktop App, Infocenter, etc.
Standard memory requirements of these processes are as small as cca 15-40MB each, but they may require more CPU power if they are blocked by an antivirus or a firewall. So if required, add them to the exceptions list (no-scan/no-block) in your antivirus.
Thanks!
Xiaojin Zhang