Can any one explain this?

Hi i have using ion-list for My quiz,Its saved in local storage then show to display,but here its working very fine in android 5" display but when am going to use above 5" display its not working properly,For ex. after 10 quiz its get slow and its show just option only its not show question ,if i scroll down last 5 question showing correct.pls explain and what to do becoz i launched this app in play store and its my ist app that is why…Very urgent