Introduction
As with most technologies, in AngularJS, the devil is in the details.
In general, the lion's share of encounters with AngularJS's sluggishness is a result of overloading the application's data-binding bandwidth. Doing so is quite easy, and a normative production application contains a substantial amount of data binding, which makes architecting a snappy application all the more difficult. Thankfully, for all the difficulties and snags that one can encounter involving scaled data binding, the use of regimented best practices and gaining an appreciation of the underlying framework structure will allow you to effectively circumnavigate performance pitfalls.
