As an update to this, mine now seems to be working fine. I tried a few other models and no issues loading enscape, although a couple of them did pause for a few seconds at 60%. The model that got stuck I loaded it up again and started Enscape - it paused for about 10-15 seconds at 60% and then carried on to load fine.
So not sure what the issue was first time around.
In any case I am glad to hear that - but still, if you experience any loading problems again in the future let us know so that we can further troubleshoot the cause behind it.