Hi there,
The Free plugin version uses a native WooCommerce search engine. It means that the search speed depends on many factors:
How many plugins do you have?
How many products do you have?
How is your WordPress optimized?
How fast is your server?
How big is the search scope?
FiboSearch Pro has a different search engine based on the inverted index data structure. The Pro engine works under the special SHORTINIT WordPress mode. This means that each search query doesn’t need to load unnecessary files including all plugins, themes, and a large part of the WordPress core files. This results in the search always being fast, no matter how many plugins you have or how your website is optimized (or not optimized). The average search speed for 50 000+ products is about 0.2 seconds per request (standard shared hosting). For users who have a fast server, it takes less than 0.1 seconds. Finally, FiboSearch Pro is always ultra-fast.
The search speed is a core feature in the Pro plugin version.
You can try our Pro version with a 30-day money back guarantee: https://fibosearch.com/pricing/
Best regards,
Clint