I am having chronic audio issues when trying to watch Amazon Prime streaming video. When playing a video using the Prime app, there are intermittent audio cut-outs. This usually happens at the beginning of a program, cutting out for a second or two every minute or so (approximately). Sometimes the problem will resolve itself after a few minutes, but usually it does not. I have noticed this problem intermittently in the past, but it seems to be chronic now.
I am using a Panasonic Viera TC-50AS530U TV (June 2014), connected to Verizon FiOS via 5GB wireless. I have rebooted the FiOS router. The FiOS WiFi signal is strong (5 bars), and upload/download speeds are >150Mbps (tested using iPhone speedtest app, connected to the same 5GB WiFi SSID). This appears to be a streaming-only issue: Regular FiOS TV video (including on-demand selections) from the set top box does NOT have the audio issue.
I have ensured that the TV firmware is the latest version available, and have selected PCM (instead of Auto) for the audio mode for Prime viewing, but this seems to make no difference in the audio drop-out issue.
Any suggestions? Thanks in advance.