We are experiencing significant performance issues on a large WooCommerce website that relies heavily on WPML for multilingual functionality. The slow performance affects both the frontend and backend, and it is becoming increasingly difficult to manage products and work within the WordPress admin.
We suspect that WPML may be contributing to the performance degradation, especially due to the size of the product catalog and the number of translations. We would like your assistance in identifying bottlenecks and optimizing WPML for our environment.
We are attaching an error log separately. Below you will find all relevant technical details and our configuration.
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Website Details
Platform: WordPress + WooCommerce
Product count: ~25,000 products (continuously growing)
Variations: Each product has 4 variations with unique SKUs
Languages: 3 languages using WPML
Product management: WP Sheet Editor (with plans to integrate Google Sheets)
Theme: BeTheme
Installed Plugins
Contact Form 7
Custom Product Tabs Manager
Elementor
Get a Quote Button Pro for WooCommerce and Elementor
Modern Image Formats
Premmerce Permalink Manager for WooCommerce
Redirection
Transients Manager
Unlimited Elements for Elementor
WooCommerce
WooCommerce Stripe Gateway
WooCommerce.com Update Manager
Wordfence Security
WP Fastest Cache
WP Hide & Security Enhancer
WP Sheet Editor - Automations
WP Sheet Editor - Google Sheets
WP Sheet Editor - WooCommerce Products (Premium)
WPML Multilingual & Multicurrency for WooCommerce
WPML Multilingual CMS
WPML Multilingual for CF7
WPML SEO
WPML String Translation
Yoast Duplicate Post
Yoast SEO
Description of the Issue
The website is consistently slow.
Managing products, saving changes, or performing bulk edits takes a long time.
Frontend pages occasionally time out or load extremely slowly.
The performance issues worsen as the product catalog continues to grow.
We believe WPML might be causing additional database load or slow queries, especially when handling product variations and translations in WooCommerce. When the WPML plugin is disabled, the website runs smooth again.
Our Questions / Request
Could you investigate whether WPML is causing database or query bottlenecks in our environment?
Are there recommended settings or optimizations specifically for large WooCommerce sites with many products and multiple languages?
Could slow queries or translation table issues be contributing to the problem?
Do you recommend any adjustments to WPML’s configuration or indexing?
Can WPML provide guidance on optimizing multilingual product syncing and variation handling?
We want to continue using WPML but need assistance in making the site performant and scalable. Any help, recommendations, or diagnostic steps would be greatly appreciated.
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