Title: Issue when activating cache
Last modified: February 24, 2024

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# Issue when activating cache

 *  Resolved [avonrivercs](https://wordpress.org/support/users/avonrivercs/)
 * (@avonrivercs)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/issue-when-activating-cache/)
 * Installed WP-Optimize and started setting up by turning on cache. Checking the
   site on Google page insights shows the preview as a page full of symbols and 
   random text, not my homepage preview. I might add that it returns a mobile score
   of 97 and desktop score of 98. The pages seem to be working, but I fear that 
   they are in cache and my visitors will see this weird page full of symbols and
   random text when the cache clears. Any suggestions on this?
 * The page I need help with: _[[log in](https://login.wordpress.org/?redirect_to=https%3A%2F%2Fwordpress.org%2Fsupport%2Ftopic%2Fissue-when-activating-cache%2F%3Foutput_format%3Dmd&locale=en_US)
   to see the link]_

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [pbevanudp](https://wordpress.org/support/users/pbevanudp/)
 * (@pbevanudp)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/issue-when-activating-cache/#post-17450403)
 * Hello
 * Depending on the assets that your site uses caching can sometimes cause display
   discrepancies on the page speed insights preview render. It can be quite unstable
   when rendering previews in general. If the pages are working correctly and you
   have not had any reports from actual visitors I would not be concerned.
 *  Thread Starter [avonrivercs](https://wordpress.org/support/users/avonrivercs/)
 * (@avonrivercs)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/issue-when-activating-cache/#post-17450700)
 * I thought that the other day when I first activated it, left it overnight and
   when I checked the site the next day, the pages were the same as the insights
   preview, symbols and random text, no content at all. I quickly wiped the settings
   and deactivated the plugin. The site came back once I deactivated.
 *  Plugin Support [vupdraft](https://wordpress.org/support/users/vupdraft/)
 * (@vupdraft)
 * [2 years, 3 months ago](https://wordpress.org/support/topic/issue-when-activating-cache/#post-17454364)
 * Hi,
 * Can you disable GZIP in WPO, and clear your cache.
 * Also deactivate any optimizations plugins that may be using GZIP if you have 
   any, some examples of optimisation plugins which add GZIP are;
 * _**Add Expires Headers
   Check and Enable GZIP CompressionForce GZIPFar Future 
   ExpirationHTTP HeadersPageSpeed Ninja
 * Again clear your cache before re-activating them
 * If you don’t use such a plugin, the solution would be to find and remove these
   lines anywhere in your active plugins or the theme:
 * ob_start( ‘ob_gzhandler’ )
 * -OR-
 * ob_end_flush()

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Issue when activating cache’ is closed to new replies.

 * ![](https://ps.w.org/wp-optimize/assets/icon-256x256.png?rev=1552899)
 * [WP-Optimize – Cache, Compress images, Minify & Clean database to boost page speed & performance](https://wordpress.org/plugins/wp-optimize/)
 * [Frequently Asked Questions](https://wordpress.org/plugins/wp-optimize/#faq)
 * [Support Threads](https://wordpress.org/support/plugin/wp-optimize/)
 * [Active Topics](https://wordpress.org/support/plugin/wp-optimize/active/)
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 * 3 replies
 * 3 participants
 * Last reply from: [vupdraft](https://wordpress.org/support/users/vupdraft/)
 * Last activity: [2 years, 3 months ago](https://wordpress.org/support/topic/issue-when-activating-cache/#post-17454364)
 * Status: resolved