My old Chromecast died and I bought the new one. It actually lets me turn off my old TV remotely without the actual remote. I can turn it off on my phone. That’s worth getting a new one for me.
I still have another old Chromecast, but that one is connected to a newer LG TV that I can turn off using the LG app, so it doesn’t matter to me.
Not the old one I have.
Device features > Ambient mode / Video / Audio
Video > Use 50Hz / Video smoothness / Automatically turn on game mode
The new one I bought recently can download apps and comes with a remote. It also has a remote in Google Home. The old one has no physical remote or in Google Home.