We can set a timeout that when reached, the scene will begin rendering and
entities will begin initializing regardless of whether all the assets have
loaded. The default timeout is 3 seconds. To set a different timeout, we just
pass in the number of milliseconds to the timeout
attribute:
If some assets are taking a long time to load, we may want to set an appropriate timeout such that the user isn't waiting all day in case their network is slow.
<a-scene>
<a-assets timeout="10000">
<!-- You got until the count of 10 to load else the show will go on without you. -->
<img src="bigimage.png">
</a-asset>
</a-scene>