We have developed an application wherein through API we populate a drop down which shows name of cities with user registered user count. Total no of items should be around 2500. Prior to this 12 Jan release, it was working all right and drop down was loading instantly. However now its long wait of more than 10-15 sec before if populates and till then the page freezes. We have checked our API its still the same, generating list blazing fast. For sure, its issue with recent update by FF.