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WhatsApp is the worst app on your Windows 11 PC right now, eating 1.2GB of RAM doing nothing
(www.windowslatest.com)
This is a most excellent place for technology news and articles.
Apps can reserve RAM without using it. It is totally normal for apps to do this on every modern OS. Linux included. The amount of RAM reserved is not the same as the amount of RAM that app is using. And apps don't have a strangle hold on R being reserved unless that RAM is actually in use. Windows will automatically take reserved RAM away from one app and give it to another app that is out of its reserve space. This is all very normal.