Mine chokes on one hit to one post.
This doesn’t sound right - at all.
Ghost by default is really quite lightweight at the moment. We’re building more complex features all the time and that will, by necessity, increase the amount of resources required, but at this point in time 1GB of RAM is recommended and that’s mainly to cope with installing dependencies during install/upgrade, not general traffic handling.
A couple of things to check:
Are you using the default theme?
The theme is the place where you as a user have the most ability to cause performance bottlenecks by accident, as it were.
Are you up-to-date?
We regularly test and make improvements to performance, so it should pay off to keep up-to-date. If your performance decreases significantly after an update, we’d want to know about it.