black screen no video on Rind Doorbell 2

I have a ring doorbell 2 and two stickup cams on the front of my house. The WiFI signal strength show RSSI values between of 52 (door) to 85, WIFI download speeds range for all three range from 3.0MPS to 1.1MPS (Door is this fastestest). Uploads are 6.5 MPS to 9.4 MPS (Door again is the fastest). Ping rates ae 31 ms (door) to 55 ms. I a fairly busy street 25 feet in front of me and have played arround with motion sensitivy on the doorbell. I am getting consistant motion camera activation for both stick up cams and motion alerts for the doorbell, but frequently the camera will not activiate and records a black screen. I just replaced my origional Ring Doorbell that failed after a few years. I never had this problem.