Refer to the Aura component below: HTML<aura:component><aura:attribute name="contactInfo" type="Object"/><aura:attribute name="showContactInfo"…

The component's performance issue stems from unconditionally rendering the child component on initial load because showContactInfo defaults to true. Changing the default to false implements lazy loading. The child component and its associated data processing will not be initiated until the showContactInfo attribute is explicitly changed to true, for example, by a user action. This defers the rendering and improves the initial load time of the parent component.

A. Moving the contents of the child component into the parent would likely worsen performance by increasing the parent's complexity and initial payload, preventing lazy loading.

B. Changing the attribute type from Object to Map is a data structure change that would not have a significant impact on the component's rendering performance.

1. Salesforce Aura Components Developer Guide, "Performance Best Practices for Aura Components", section "Use Lazy Instantiation for Components". (Explicitly recommends using aura:if with a default false condition to defer component creation).

2. Salesforce Aura Components Developer Guide, "Conditionally Displaying Content with aura:if". (Explains how aura:if adds or removes components from the DOM, which is the mechanism for lazy loading).