It does not matter how well or poorly Chrome mismanages memory, 400MB is still 400MB. If that 400MB is 10% of the free RAM after the share the OS takes, then that is a hefty toll. And the regular updates Windows 11 users are getting are famously not providing value, but taking value away. Case in point right here is the new media player.
People try to use Windows 11 with 4GB of RAM?
I doubt that's viable, honestly... At that point, just don't use microslop software