My store runs slow when I publish the theme, especially the collection page, if I clone the theme and have a preview, it works super fast. Although no changes were applied the theme.
Published theme: https://bit.ly/3bRR1v8
What could be the reason?
The preview link didn't work for me so I couldn't compare, but I have some ideas:
- some apps inject their scripts into the live theme, rather than including in a snippet. If that's the case, the live theme could load slower if it's a slow / heavy script. You can test by briefly publishing the preview theme and recording the results of each theme when it's live. I recommend webpagetest.org for getting load speed / requests / weight results.
- it looks like the slowest loading element is the fb chat widget. If you've ran your test over multiple days it's probably something to do with the first point I made. If it seems random, it may be a widget like this that loads multiple larger resources, sometimes that can cause inconsistencies.