Like I write in the headline: If I play stadia on my older tv (full hd, no 4k, 18mbit connection), using Chromecast ultra, I have often problems with stutter and also completely restarts by itself of the Chromecast ultra. It's not a thing of internet connection. I already changed router and AP. Wifi signal is best. Even YouTube closed sometimes by itself. After unplug USB and restart it runs fine. Because it gets very hot, I guess it's a thermal problem. I would no have problem to buy a new Chromecast. But I don't know which one is best. Have the current models of Chromecast ultra the same issue? Maybe the newest Chromecast with Google TV is better? I just want to play stadia..