It is very common to face the errors on Fire Stick while streaming the device. Optimizing system storage and applications is a common error that will cause when there will be a insufficient power supply or power cord related issues. Always make sure to use the accessories that you got from the original package or it could affect the random failures and affects the performance of the device. If you still face the Fire Stick Optimizing system storage and applications, then replace the power cord or reach our technical support team @ +1-844-920-4357 for customer support. Our tech experts will assist you 24/7.