iPhone Spotlight(pull-down) Search becomes very slow when disable "learn from this App" for all apps

This is ridiculous.

The more I disable "Learn from this App" for my apps in Siri & Search setting, the slower it is in Spotlight(pull-down) search, I have about 100 apps installed and I tried to disable "Learn from this App" for every single one of them, now the spotlight search takes 5-10 seconds to respond when I type anything like "Sett" for settings. I believe there is an inherent buggy logic in how spotlight handles disabled options for "learn from this App", make it so that the more disables search in apps, supposingly it has less to search so the search should be faster, but no, it becomes slower with more disabled app searches - totally contrary to intuition. Please fix it.

This is 100% reproducible with my phone, because when I turn back on for all the disabled searches in Siri & Search settings, the pull down search becomes way faster(of course I got a lot of unwanted search results), the delay becomes 1 second instead of 5-10 seconds. Again totally counter intuitive and there must be something wrong with how it is implemented.