Turns out, Windows really hates unused RAM.
To fix high memory usage in Microsoft Edge on Windows, try closing unnecessary tabs, clearing cookies and cache, and restarting your PC. Enable Efficiency Mode, use Sleeping Tabs, and tweak graphics ...
Overview   Laptops slow down caused by accumulated junk files, background apps, and overloaded RAM, reducing efficiency and ...
Chrome’s Memory Saver sounded smart — until it started slowing me down.