Firefox puts load on the lsass process
Firefox and only he is seen in the active use of the lsass process. If you open an empty firefox browser with no tabs or only settings tabs, then the lsass process does not consume anything. However, if you open any tab with the Internet, the lsass process begins to consume from 1 to 6 percent of the processor, for a while. On some pages there is more, on others less, it happens that it constantly consumes 4+, sometimes it sags a little to 1-2. However, any tab opening and internet manipulation leads to this result - lsass consumes CPU resources. Does not depend on the presence of add-ons, I put the regular and portable versions 81 82 83.
This behavior of the lsass process does not occur in any other browser that I have been able to install. Be it chrome, opera, avant, waterfox tor browser, vivaldi, and others. On another computer completely zero, this process is also used, although a little faster, but also every time the page is opened, there is a load on the processor from lsass.