We’ve made a metabox for a site element which we call a block.
A block comes in 10 kind of forms so we’ve made a first select field called ‘Block type’.
Then there are around 15 fields, some specific to a particular block and some general to all.
We’ve added conditions to all these fields to define for which block types they should appear.
When changing the block type there is a delay up to 600ms shown in the Chrome developer tools.
This problem becomes really evident when we tried to use multiple instances of this block.
We want to be able to show a lot of these metaboxes so the page can be build nicely.
But upon loading the page, every single field with conditions is triggered.
And for every relation between ‘triggered-field’ and ‘conditioned-field’ there is a separate trigger.
We’ve been debugging this and found out that a single block/metabox already has 260 triggers.
When we try to work with 10 blocks for example, the page then takes to long to load and chrome proposes to kill the tab because it seems unresponsive.

Our current solution would be to ditch the conditions and build those ourselves with some javascript of our own.
But I’d love to use Piklist for this functionality.
It just looks like it really needs some optimizing.

I did find a small improvement and I’ll send a pull request for it.