Unlike Chromecasts before it, Chromecast with Google TV sports its own Android TV-derived interface, as well as multiple accounts for the many users your household may host. With all of them receiving their personalized recommendations and so on, there’s a lot of activity going on, and clearing the cache can be very helpful.
Doing so is as simple as following these steps:
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Navigate to Settings from your profile screen.
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Select System, then Storage.
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From the Storage menu, open Internal Shared Storage.
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Select Cached Data, and then confirm.
Google Support notes that this will clear the cache of all apps stored on your Chromecast with Google TV. Cached files, of course, can be convenient, so this approach may be a little heavy-handed for some users. An alternative is to choose specific apps and remove them from your Chromecast with Google TV. To do this:
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Return to the main Settings menu.
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Select Apps, then All Apps.
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Scroll through the list of installed apps, and select one that has outstayed its welcome.
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Select Uninstall, and then confirm.
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