Recently purchased a PHILIPS - 50PUS8555, and 4k works fine on other steaming apps, but on the Google Play Movies app every 4k release is constantly stuttering. I have a gigabit connection, and the TV is pulling about 100Mbps when running a speedtest. Is this just the native app being subpar?
Is there another service I could try to rent/buy 4k movies on? I ordered a Fire Stick 4k to give the app a try on that, but would be nice to have something native that worked.
Same problem here in Canada, no solution
Edit: for anyone who finds this, Google Movies (the app) is probably already linked to your YouTube app. Open YouTube, menu, purchases and membership > your content should be there. For whatever reason, the YT app is a much more stable streaming/Chromecast buffering technology.
Hopefully this solves your problem.
Edit 2: it solved most of our problem, one 5-10 second buffer per 8-10 minutes.