[wp-trac] [WordPress Trac] #28580: Speed up customizer by lazy-loading controls and settings as needed

[WordPress Trac]

#28580: Speed up customizer by lazy-loading controls and settings as needed
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 Reporter:  westonruter  |       Owner:
     Type:  enhancement  |      Status:  new
 Priority:  normal       |   Milestone:  Future Release
Component:  Customize    |     Version:  3.4
 Severity:  normal       |  Resolution:
 Keywords:  has-patch    |     Focuses:  javascript
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Comment (by westonruter):

 Let's continue the discussion regarding Theme Switcher performance
 improvements to the ticket specific to it, as it is the key one for 4.2:
 #31793

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Ticket URL: <https://core.trac.wordpress.org/ticket/28580#comment:18>
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