turn on suggestions
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Seeing as you mention YouTube and Vimeo - are we talking about the browser crashing rather than specific apps?
If so, you might want to try clearing the browser cache and history.
In the browser, open the menu by swiping down from the top of the screen. Tap Settings.
Tap Privacy & Security
Tap the 'Clear All' button.
Quit the browser.
After the cache clear, restart the browser and see if the problem persists.
below the post(s) that helped you.