My Stadia worked fine on setup until yesterday. After hours of troubleshooting I realized that in my Sony TV settings there is an option to choose "standard format" instead of "enhanced format" for my HDMI signal which resolve my blinking black screen issue. My game appears to still run in 4k. If anyone knows ifthe Chromecast Ultra supports this I would appreciate it. And if it doesn't, what are we losing in terms of quality? Thanks so much!