In my experience it generally does, but on older devices, especially older androids, when the FPS does drop, the entire UI appears to be affected, whereas nativ

In my experience it generally does, but on older devices, especially older androids, when the FPS does drop, the entire UI appears to be affected, whereas native widgets seem to perform better, or at least, don't seem to drag down the performance of the entire app UI if one widget is misbehaving.