PSA: Chromecast Gen 3 does not support 1080p 60fps. I asked them to inform users of this on their tech specs, and this was their response. : r/ Chromecast
PSA: the new Chromecast 2015 doesn't let you watch YouTube videos in 60fps - Phandroid
Google announces new Chromecast with 1080p streaming at 60fps | VentureBeat
Google's new Chromecast adds 60fps support for 1080p video and Chromecast Audio | AFTVnews
Google CHROMEC4KGTVW Chromecast with Google TV - Snow | BrandsMart USA
Chromecast with Google TV - Streaming Entertainment on Your TV with Voice Search - Watch Movies, Shows, Live TV, and Netflix in 4K HDR | Dell USA
Google Unveils 2018 Chromecast: 1080p at 60 fps, Chromecast Audio Support
Google Chromecast with Google TV 4K 60fps HDR Streaming Snow 2 Pack - Walmart.com
Chromecast 3rd Generation (3-Pack ) GA00439-US Streaming on your TV from all your familys devices Up to 1080p 60fps - Walmart.com
Google CHROMECAST with Google TV REMOTE 4K 60fps HDR Streaming Snow *NEW IN BOX* | eBay
Chromecast With Google TV, 4K 60fps HDR Streaming 2020 – Snow | McSteve
Google Chromecast with Google TV 4K 60fps HDR Streaming Snow 3 Pack — Beach Camera
Google Chromecast 4K with Google TV Snow - 4K HDR Streaming @60fps - Bluetooth Connectivity - Voice Remote with integrated mic - antonline.com
Google Chromecast with Google TV 4K 60fps HDR Streaming Snow 3 Pack — Beach Camera
GA01919-FR, Google Chromecast with Google TV - AV player 4K UHD (2160p) 60 fps HDR snow - EU PLUG | EET
Chromecast 3rd Generation (3-Pack ) GA00439-US Streaming on your TV from all your familys devices Up to 1080p 60fps - Walmart.com