That’s because a booking functionality with available timeslots requires JavaScript.

If your seeing 220ms to load the plugin itself, that likely is due to external libraries getting loaded, and would not add to loading as I think all elements would begin loading at same time, but some take longer so finish loading later.

But if you are seeing 220ms to complete an action with the plugin, you may want to switch plugins.

If bubble were to introduce these types of features, it will need to be coding them, or they need to build their own plugins. I think neither of which need to or should happen.