I do the same but in the last few months I have noticed strange latency on my Hangouts calls. There seems to be a very short delay that causes conversations to be more difficult than they need to be. It's probably my home internet (since this is the only place I use Hangouts to call) but I am pretty sure I have a good connection. I haven't tested latency thoroughly but on the bandwidth side of things I have something like ~80mbit/5mbit through Comcast.