Next.js App Router delay during navigation
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Porcelaine posted this in #help-forum
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PorcelaineOP
next.js 13 There is a delay when the route jumps to the page. What is the reason?
6 Replies
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joulev
because that route is dynamically rendered (so the data fetching etc is done at request time)
you can use [Loading UI and Streaming](https://nextjs.org/docs/app/building-your-application/routing/loading-ui-and-streaming) to add instant loading states
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PorcelaineOP
thanks let me take a look
My app keeps reporting this error
FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
FATAL ERROR: CALL_AND_RETRY_LAST Allocation failed - JavaScript heap out of memory
![Image](https://cdn.discordapp.com/attachments/1144888834836942918/1144916382979473439/image.png)
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joulev
this is because your computer runs out of RAM
shut down the dev server, shut down some other RAM-intensive apps (e.g.: discord), then try again