Frequently Asked Questions
The questions we’re asked most often about Scalability Pro, drawn from five years of support. For problems and error messages, see the Troubleshooting guide,…
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Troubleshooting
This page collects the most common Scalability Pro problems and their fixes, based on five years of support in our Discord server. If your…
Read moreQuick Start Guide
If you just want the fastest route to a faster site, follow these steps in order. The whole thing takes a few minutes, and…
Read moreCustom Query Alterations
The optimisations in the Query Speed tab are deliberately conservative. They’re written to apply where they’re safe and to leave everything else alone, because…
Read moreSpeeding Up Single Product and Post Pages
Most of Scalability Pro’s work is aimed at archive pages, the lists of products and posts, because that’s where slow queries usually live. Single…
Read moreAjax Attribute Editing
When you open a product for editing in WooCommerce, the Attributes panel loads every term for every attribute attached to that product. For most…
Read moreOptimise WooCommerce Updates
WooCommerce runs DELETE operations against wp_options on a number of admin and front-end pages, mostly to clear out expired transients. The problem is that…
Read moreWooCommerce Admin Query Fixes
Some slow admin queries don’t come from a general setting you can tune, they come from one specific piece of code doing something expensive.…
Read moreSuper Speedy Listings Add-on
On a large site, archive pages get expensive. Author archives, taxonomy and category archives, and filtered listings all have to work out which posts…
Read moreUsing the Slow Query Log
Before you can fix what’s slow, you need to know which queries are slow and where they’re coming from. A page that takes four…
Read moreRemove WooCommerce Dashboard Bloat
WooCommerce adds a number of elements to wp-admin that most shop owners never look at, and each one has a cost. Some run database…
Read moreRemove Image Sizes Globally
Every time an image is uploaded or imported, WordPress generates a resized copy for every registered image size. That’s thumbnail, medium and large to…
Read moreSwitch Off Phone Home
Plugins and themes frequently make outbound HTTP requests while you’re working in wp-admin. They check for updates, validate licences, and send telemetry back to…
Read moreCache WooCommerce Shortcodes
Product grid shortcodes are convenient, but they’re expensive. The , and Flatsome [ux_products] shortcodes each run a product query and render a grid every…
Read moreCache Author and User Counts
Some of the slowest queries in wp-admin come from counts you never asked for. On the Posts and Products screens WordPress builds the row…
Read moreOptimise Product Attributes Lookup
WooCommerce keeps a product attribute lookup table to make filtering and faceted searches fast. That table needs regenerating from time to time, and the…
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