We currently set up and delete all Elasticsearch indexes before and after all rspec tests. This adds a noticeable lag which we don't really need for tests that don't use the search index. We should be able to differentiate them pretty easily using tags, so it's just a matter of going through all the files and making sure they have the right settings and the tests still pass.
This change significantly reduces the running time of our RSpec test suite. An example, around the time the change was merged:
rspec spec/controllers: 40m down to 15m
rspec spec/miscellaneous: 15m to 6m
rspec spec/models: 18m to 9m