wordpress 5.9 generates big ttfb and slows the website
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I have a strange situation : I updated a website to WordPress 5.9 and suddenly the page loading time increased from 1-2 seconds to 15+ seconds. Looking over the network tab i see that the TTFB is increased to 11+ seconds.
I created a test domain and installed WordPress 5.8.3. Added the same theme with no content – just the “hello world” post. The loading speed is 0.6 seconds . If i update to 5.9 the loading time becomes 11+seconds.
Here are 2 screen captures from query monitor
5.8 -0.6 seconds
https://i.stack.imgur.com/sZGQ3.png5.9 -11.6 sec
I start disabling portions of code and i think i can tie the big loading times to get_header and wp_head() functions but i could not pinpoint the problem. I also disabled all the hooks and filters but with no luck.
I checked the database queries and the load is not coming from there – you can see from screen captures also.
I disabled Gutenberg styles on front end
I read the release log for 5.9 but i did not saw something that could affect the website.
I know that a non default theme is involved but any advice will be appreciated since i’m running out of ideas.
Server details
### wp-core ### version: 5.9 site_language: en_US user_language: en_US permalink: /%postname%/ https_status: true user_registration: 0 default_comment_status: open multisite: false user_count: 1 dotorg_communication: true ### wp-paths-sizes ### wordpress_path: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence wordpress_size: 53.30 MB (55892328 bytes) uploads_path: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence/wp-content/uploads uploads_size: 79.28 MB (83133747 bytes) themes_path: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence/wp-content/themes themes_size: 418.79 MB (439135904 bytes) plugins_path: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence/wp-content/plugins plugins_size: 90.18 MB (94556628 bytes) database_size: 2.64 MB (2768896 bytes) total_size: 644.20 MB (675487503 bytes) ### wp-dropins (2) ### advanced-cache.php: true db.php: true ### wp-active-theme ### name: WpResidence (wpresidence) version: 4.3 author: wpestate author_website: https://www.wpestate.org parent_theme: none theme_features: core-block-patterns, widgets-block-editor, title-tag, post-thumbnails, automatic-feed-links, custom-background, align-wide, gutenberg, menus, widgets theme_path: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence/wp-content/themes/wpresidence ### wp-themes-inactive (5) ### Twenty Twenty: version: 1.9, author: the WordPress team Twenty Twenty-One: version: 1.5, author: the WordPress team Twenty Twenty-Two: version: 1.0, author: the WordPress team WpResidence: version: 3.7.0, author: wpestate WpResidence child theme: version: 1.0.0, author: WpEstate ### wp-plugins-active (4) ### Enable jQuery Migrate Helper: version: 1.3.0, author: The WordPress Team Health Check & Troubleshooting: version: 1.4.5, author: The www.remarpro.com community Query Monitor: version: 3.8.2, author: John Blackbourn Wpresidence -Theme Core Functionality: version: 4.3, author: wpestate ### wp-plugins-inactive (14) ### Classic Widgets: version: 0.3, author: WordPress Contributors Debug Bar: version: 1.1.2, author: wordpressdotorg Debug Bar Slow Actions: version: 0.8.4, author: Konstantin Kovshenin Elementor: version: 3.5.5, author: Elementor.com Envato Theme Check: version: 1.0.0, author: Scott Parry F12 Profiler: version: 1.3.8, author: Forge12 Interactive GmbH One Click Demo Import: version: 3.0.2, author: OCDI Slider Revolution: version: 6.5.14, author: ThemePunch SVG Support: version: 2.4.2, author: Benbodhi WP Downgrade | Specific Core Version: version: 1.2.2, author: Reisetiger WpEstate CRM: version: 3.7.0, author: wpestate WP Reset: version: 1.95, author: WebFactory Ltd WpResidence Elementor Widgets: version: 4.3, author: WpEstate WP Rocket: version: 3.2.6, author: WP Media ### wp-media ### image_editor: WP_Image_Editor_Imagick imagick_module_version: 1690 imagemagick_version: ImageMagick 6.9.10-23 Q16 x86_64 20190101 https://imagemagick.org imagick_limits: imagick::RESOURCETYPE_AREA: 122 MB imagick::RESOURCETYPE_DISK: 1073741824 imagick::RESOURCETYPE_FILE: 6144 imagick::RESOURCETYPE_MAP: 512 MB imagick::RESOURCETYPE_MEMORY: 256 MB imagick::RESOURCETYPE_THREAD: 1 gd_version: bundled (2.1.0 compatible) ghostscript_version: 9.50 ### wp-server ### server_architecture: Linux 5.4.0-67-generic x86_64 httpd_software: Apache php_version: 7.4.27 64bit php_sapi: fpm-fcgi max_input_variables: 5000 time_limit: 600 memory_limit: 512M max_input_time: 60 upload_max_size: 128M php_post_max_size: 128M curl_version: 7.68.0 OpenSSL/1.1.1f suhosin: false imagick_availability: true server-headers: unknown htaccess_extra_rules: false ### wp-database ### extension: mysqli server_version: 10.3.32-MariaDB-0ubuntu0.20.04.1 client_version: mysqlnd 7.4.27 ### wp-constants ### WP_HOME: undefined WP_SITEURL: undefined WP_CONTENT_DIR: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence/wp-content WP_PLUGIN_DIR: /var/www/vhosts/xn--diseowebmlaga-ceb8u.es/wpresidence/wp-content/plugins WP_MAX_MEMORY_LIMIT: 512M WP_DEBUG: true WP_DEBUG_DISPLAY: true WP_DEBUG_LOG: true SCRIPT_DEBUG: false WP_CACHE: false CONCATENATE_SCRIPTS: false COMPRESS_SCRIPTS: undefined COMPRESS_CSS: undefined WP_LOCAL_DEV: undefined ### wp-filesystem ### wordpress: writable wp-content: writable uploads: writable plugins: writable themes: writableThe page I need help with: [log in to see the link]
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