

Nvidia Shield. The regular version is $150 US and from what I understand it gives flawless playback. I have the pro version which is more powerful, but that’s specifically for running games.
It’s Android TV OS, so app selection is great. You can load Smart Tube Next on there to get YouTube without ads, and there’s a very solid Jellyfin app. You can also use Kodi for local direct playback. Remote is perfectly functional, and you can use an app to rebind most of the keys.
I’ve been running Seafile for over ten years. They released version 12.0 just last month. I’m really not sure why people have this impression that it’s not maintained.
Seafile updates slowly because it’s very much intended as an enterprise product. It has minimal bells and whistles, but the core functionality is reliable and works well. It’s more of a BlackBerry than an iPhone.
In the side by side tests I’ve seen it syncs a lot faster than Nextcloud. I keep my entire documents, downloads and picture folders synced there across three different machines, nearly 300GB of data in total, and I can wipe my laptop and sync all my files back in under and hour. File transfers basically cap out at network speed, even with large numbers of small files. I’ve used the desktop client, the drive client and the mobile client and never had any complaints with any of them.
Sidenote, if you create an account on their site they’ll give you a pro license for up to three users, free forever.
The documentation is a bit of a beast, but worth reading thoroughly. Setup is a little fiddly compared to Nextcloud (that’s a major turn off for a lot of people, understandably so). If you have questions message me and I’ll try to help. If you go with the free pro license, be sure to enable offline garbage collection, it’ll help keep your storage use under control.
Anyway, I really like it, works well for me. Definitely worth trying out.