When running capybara feature specs I can see lots of Slow factory notices which are populated byfactory_girl. These Slow factory things heavy slow down the feature specs, I think, even feature specs are intrinsic slow specs. Then I had some inspect and found out most of the Slow factory was caused bypaperclip. We had model using paperclip here:
factory :asset do
So I wonder if there's a way like test mode for paperclip to speed up tests. I have simple solution here: Just copy the original file instead of actually crop it.