Ionic 2 performance with Android 4 devices

I’m evaluating Ionic and I created a simple app that uses a searchbar, queries a http service and show the results in a list.
That app when is run in a 4.4.4 low device is very very slow, and simply typing in the search box is irresponsive and you don’t see what you type.

Is there something that I can do to improve? There are some performance issues with that android versions? Can I expect a big improve in performance in final version or it will be similar or little improved?

I actually suspect it might be your code that is querying the http service that is the issue.

Are you performing any debouncing on the input to reduce the requests?

Have you tried mocking up the request locally to isolate the performance bottleneck?