Recommendation: News / Magazine Theme for Low Resources Hosting

What WP newspaper / magazine themes are there for low resources hosting (VPS) with 3000-7000 users per day in the future.

I’ve tested a VPS with 2Gb of ram and since I’ve installed Newspaper by tagDiv the RAM when to the roof… with 0 visitors and only 25 articles.
Of course that with some tweaks to Apache, php and Nginx caching things settled a little bit…

I was hoping for some theme recommendations in order to spare system resources…

The culprit was php-fpm that needed some optimizations. Guides for php-fpm can be found online.
I guess the best thing s to get optimized WP hosting vs a normal VPS if you dont have the know how to fiddle with configurations.