This problem started today, when I wanted to listen to music. I asked Alexa to play my playlist and everything was fine. But after 30-40 seconds the playback started to freeze, and It got a latency. If I open my Spotify app I can see that the bar over the playback control is jumping back and forth 1-2 seconds. On my phone I can play songs without a problem. And if I ask Alexa immidiately after this lag for example about the weather she answers without any problem. I tried to restart my router and modem and also my Echo Dot but It didn't solved the issue.