I have already updated to php 7! And as far as hosting is concern I have a pretty good hosting! And as I can see in the speed test my hosting responded preety quick so it should be something else other than hosting! Also, I was getting better speed with my previous newspaper theme by tagdiv on the same hosting provider!
It would be great if you can spare some time and look into this matter!
PS: Its neither any plugin that is taking somuch of time to load