Cannot Access Video When There's Activity

Whenever I get a notice that there's activity at the front door, I cannot access the video for several seconds, up to a minute, or longer. The RSSI for the doorbell is either -56 or -57. I moved the doorbell next to the router as a test -- the RSSI read -15. I just added a Ring Chime Pro. The RSSI for the Ring Chime Pro is -46 (the last time I checked it). The RSSI for the doorbell did not improve after I added the Ring Chime Pro. I continue having problems accessing the video when I receive notice that there's activity at the front door. The same thing happens when someone rings the doorbell and I try to access the camera -- I can't. I can access "live view" anytime. According to an online article, a RSSI between -50 and -60 is very good. Well, it's not good enough to solve the problem I'm experiencing. Any guidance would be sincerely appreciated.