@codiqa100031834 you are right, my apologies. I tested my app again, after having removed XWalk on a Samsung Edge/Android 6 and my Nexus 5X/Android 7.1.2 and in both case, I’ve to say, my app was smooth (I’m using Ionic 2.3.0 with Angular 4) respectively didn’t noticed that much difference as my app with XWalk.
Since I’m targeting mostly users with Android >= 5, I most probably gonna ship now my app without XWalk from now.
So yep, thx @codiqa100031834 and @mhartington