Amazon’s race to create an AI-based successor to its voice assistant Alexa has hit more snags after a series of earlier setbacks over the past year. Employees have found there is too much of a delay between asking the technology for something and the new Alexa providing a response or completing a task. The problem, known as latency, is a critical shortcoming, employees said in an internal memo from earlier this month obtained by Fortune. If released as is, customers could become frustrated and t...