Rendering of connections slows down the whole page, we need to check if there are improvements in rendering them. - [ ] Check if the render method is being called multiple times for each connection - [ ] Maybe this also causes the massive amount of NaN errors - [ ] Consider using [lodash](https://github.com/bestiejs/lodash) instead of underscore because we need to traverse a lot
Rendering of connections slows down the whole page, we need to check if there are improvements in rendering them.