This article gives a good overview on the approaches:

https://community.servicenow.com/community?id=community_blog&sys_id=590e6a2ddbd0dbc01dcaf3231f9619b7

Thanks for the link @paul.curwen 

The issue is server side as we get the running transaction message. The blog is more related to client side issues, so unfortunately, not really relevant to the issue we are facing

Using the debug in client side by using chrome shows me:

So its spending all that time waiting for the server side to complete what its doing