Help with slow loading Rails on different networks - setup with Cloudflare if that will help

Job ID: 36436763

Budget: $10 – $30 USD

I have a production system that runs on Rails on a digital ocean droplet with 4 gig RAM, it uses RVM.
In the dashboard, one of the pages loads extremely slow for certain users. If I go to exactly the same page, from my connection, it loads very fast. Various users, connecting from various places, gets a very slow response only on that page. When I run traceroutes from their IP to the server, there are many *** in the result, where mine shoes IP addresses. This appears to be some DNS / international networking issue, but the end users are frustrated because of this. I need somebody to assist me to troubleshoot and perhaps setup cloudflare with the droplet if that will help to solve the issue. Please, if you don't know how to do it, don't bother contacting me, as it wastes both our time.
Related categories: System Admin Linux Ruby on Rails Cloud Computing MySQL