Usually I had some kind of errors or something never finished updating but this time no flaws at all during the core upgrade and all of the plugins as well. The only thing I haven't been able to check out yet is the new built in sitemap. For some reason it did not generate for my site but my original sitemap plugin I have already been using still works with no problems so I can actually say I was satisfied with this latest upgrade. 

Over the past few weeks I have been tweaking my centos running apache 5.5.38 and integrated Mariadb version 10.1.16 and have memcached running with the site and I must say it is finally running really smooth now. 

MariaDb is a way better replacement for MYSQL and performs a lot smoother with large queries. All new Centos Installs should have MariaDb as the default sql engine now and I urge anyone that hasn't upgraded to this yet to do so asap. 

I also recommend Centos also not just for performance but also the best security for your server without having to interfere with your php code or modules that might affect your oxwall site. 

Just wanted to add my input to it and maybe it might help figure out why others have problems with their oxwall. No solutions just more info to compare, and hope maybe lead to a solution for others.