<p></p>
<p>If the Map Data overlay is inadvertently used while being zoomed out to a large map area, the browser crawls to a halt. This can happen, for instance, if the user forgets to switch off the Map Data overlay after use: the website remembers the setting for the next session, which might start off with a large area.</p>
<p>I'm not sure how to properly solve the issue; maybe simply disable the Map Data overlay whenever the current zoom level is too high?</p>

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