I have a very simple lightning:recordEditForm:
<lightning:recordEditForm aura:id="recordEditForm" 
                                       objectApiName="CustomObject__c"
                                       onsubmit="{!c.handleCreate}"
                                       onsuccess="{!c.goToNewRecord}" >
    
             <lightning:inputField fieldName="Name__c" />
             <lightning:inputField fieldName="Description__c" />
             <lightning:inputField fieldName="Type__c" />    
             <lightning:inputField fieldName="Related__c" />
             <lightning:inputField fieldName="Required__c" />
             <lightning:inputField fieldName="Necessary__c" /> 
             <lightning:inputField fieldName="Source__c" />
             <lightning:input aura:id="ProjDueDate" name="ProjDueDate" label="Project Due Date" type="date" dateStyle="short" />
             <lightning:inputField fieldName="Product_Group__c" />
             <lightning:inputField fieldName="Category__c" />
             <lightning:inputField fieldName="PLM_Member__c" />
             <lightning:inputField fieldName="Sourcing_Member__c" />
             <lightning:inputField fieldName="MFG_Member__c" />
             <lightning:inputField fieldName="Quality_Member__c" />
             <lightning:inputField fieldName="Engineering_Member__c" />
             <lightning:inputField fieldName="Sales_Member__c" />
             <lightning:inputField fieldName="Application_Member__c" />
                 
             <lightning:button class="slds-m-top_small" type="submit" label="Create Project" />
             <lightning:button class="slds-m-top_small" variant="neutral" label="Cancel" onclick="{!c.handleCancel}" />   
        
             </lightning:recordEditForm>
        
As you can see, I am using a lightning:input field for the date because the default way lightning:inputField handled my date field was "April 5, 2022" instead of "4/5/2022" and it needed to look consistent with the record page. 

After deploying this into a full sandbox for testing, we are noticing a delay in the display. The lightning:input field is displayed first and for a couple of brief seconds its the only field you see, then the remaining of the lightning:inputField fields show up. 

Is there a way to keep this delay or handle it more efficiently so that all fields are rendered together? 

Or is there a way to control the way the lightning:inputField date is handled to be "mm/dd/yyyy" like the standard record page?

Thanks in advance!