Shumash thank you so much for this Rom.
I wiped everything before installing the Rom and the latest gapps, then checked that there were no remnants (Nova and What's app) before changing from Davlick to Art which takes a while up to 20 minutes.
Now all my apps open quickly without any crashes, it hasn't locked up after sleeping or anything else.
I've made my backup in case I do anything to mess it up, but it is honestly the best I have ever used over the last 3 years and Art as far as I'm concerned makes a huge difference.
Thank you very much indeed.