Using TouchableOpacity and TouchableHighlight affects UI responsiveness and battery life. Both provide visual feedback on touch, which helps users know their tap was registered. TouchableOpacity changes the opacity smoothly, which is GPU-accelerated and usually runs at 60fps without lag. TouchableHighlight changes background color instantly, which is also efficient but can cause slight frame drops if overused with complex children.
Memory usage is minimal for both, but excessive nesting or heavy children inside these touchables can increase memory and slow rendering.