Hey guys, we can continue this discussion and investigation on the post I have linked below. This report as well as others seem to all be related, so I am heading up this investigation.
With that said, if you are on a deadline to release a game or project, best practice is to stay on that engine version that you know works. The only reason you should need to upgrade when working on a project with a deadline, is if there are a number of major features or fixes necessary in the newer version which are blocking or preventing you from releasing in your current engine version.
If you have additional questions or need further assistance, please follow the link I have provided and post them there.
Thanks,