I tried to play some 4k movies in Kodi and VLC player from my local network on the new CC and both apps were playing impossibly slowly. The whole interface almost freezes and it plays like a frame every few seconds, with messed up sound. The TV wasn't switching to HDR mode either.
Meanwhile, the system built into my Hisense TV was able to stream the same movies just fine, switching to HDR mode with the files that had it.
I tried turning off the 'adapt to content' option in the display settings, so that HDR is always on, and that didn't help. Also tried changing the interface resolution to 1080p and still nothing.
Any ideas?
Update: I tried 2.4ghz wifi, that didn't help I rebooted the Chromecast and suddenly it started working properly!
5GHz WiFi on the new CCGTV dongle is rubbish. There are report on a whole bunch of forums about WiFi issues.
Simply put Google has to issue a Firmware fix.
Reliable, BIG emphasis on Reliable, 4K high bitrate home network streaming needs at least a Ethernet connection of 150Mbps to account for spikes in 4K streaming bitrates that often has accompanying lossless HD audio if we a talking about 4K Bluray Rips/Remuxes.