Just to give you some idea of whats going on here the site use to load in 1.6 seconds according to gtmetrix and also what the water falls in the developers side of things in google said.
Then once the update was installed i was advised by my host after i queried an alarm on my7 site monitoring about loading speeds that there is something now in the header stopping the front page from caching and ever since then my site loading speed has been over 4 seconds .
i have also installed query monitor to try and see whats going on and i get this.
so any help would be useful all the caching is turned on i don't understand what is going on
I have given you access to my wordpress with the user details in a private message