I have a catalog that has around 250 items (so far). It has quite a few fields, including an Image field. I've setup a test Lister module and have been experimenting how enabling and disabling fields in the "View" section affect load times. I've made a simple test template that only shows the Product Name, no other fields are rendered.
I've found that despite this, just enabling or disabling fields in the "Visible Fields" section of the Lister can have dramatic effects. When enabling the Image field in particular, it caused the page load time to go from 6 seconds to over a minute if the page was not previously cached. When loading the page subsequent times, it took around 16 - 18 seconds.
Other than limiting the number of items displayed, does anyone have any tips for increasing performance?
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