I'm currently using the google play music 90 day trial that came free with the Chromecast. I have quite enjoyed using it and like the mood settings which play a radio station based on what mood you are in etc.
Anyway when I play it and cast to the chromecast, it works perfectly and never stutters. If I play it straight on the nexus 7 again it works perfectly. However we have bought a big bluetooth speaker so that we could play music in the other room. When I use this with the nexus 7 it keeps pausing mid song to buffer.
If I download albums to the Nexus then it plays perfectly, but I can't do this for the 'radio' type lists that it makes for mood etc.
It isn't just Google play - the same happens with playing from Amazon and even playing from my NAS.
Our internet connection is 50mbit with Virgin but I think that is irrelevant given that the same problem occurs when playing media from the NAS on my local network.
The wired network in the house is all gigabit.
The wireless in the house is wireless-n.
The nexus always has bluetooth enabled and downloads files etc fast enough.
I'm going to do some more testing - will try using a 3.4mm jack lead to connect (would rather not on a permanent basis) - I will also try using different devices instead of the nexus 7 - Just wondered if anyone else had experienced similar and found out any solutions?