Referencing Javascript include file in Announcement Banner causes slow page load in Firefox

[Northwoods Software Development IT Department]

I'm using the following snippet in the announcement banner for logged in users:

<script type="text/javascript" src="/includes/nws_custom/lib/NWS.js"></script>
<script type="text/javascript" src="/includes/nws_custom/lib/jirasupport.js"></script>
<link type="text/css" rel="stylesheet" href="/includes/nws_custom/css/nws.css" media="all"></link>

In Firefox, the load time on pages exceeds 30 seconds versus Chrome being 3 seconds.

The problem started occurring after the 7.0.2 upgrade.  

Here is Chrome's JS profile:

ChromeJSAnnouncementBanner.JPG

Here is Firefox's JS profile:

FirefoxJSAnnouncementBanner.JPG

Issue is persistent with Firefox regardless of page that I view in JIRA or how many times I reload the page.  Seems tied to batch.js

Referencing any JS file in Announcement banner causes the issue, including an empty one.  Wonder if it is somehow disabling batch.js caching.  Any recommendations on how to address the slowness in Firefox?

[Northwoods Software Development IT Department]

We are running JIRA v7.0.2

[GabrielleJ]

What JIRA version do you have? There is a performance bug in the batch.js which has been fixed in the later versions.

Reference: https://jira.atlassian.com/browse/JRA-37337