No ads, better performance, customizable

I also tried Projectivy in the past but I don't remember why I switched away from it. I think there was a performance bug that was causing it to crash. Both may be good options now

All of that. Lack of ads, more performant etc. Plus (and depending on the device), you can set it up in such a way that you don't need to sign into your google account, yet still have ability to watch YouTube (Smartube), install apps (side load plus use the Fdroid TV store ... name escapes me at the moment... Flicky I think?).

Even if you need to be signed in for some reason, it's a smoother experience.

Its just...better. You'll lose some of the prettiness (for some reason, mine no longer displays backgrounds from upsplash, only solid colours) but its more than worth it.

EDIT: Yes, it IS Flicky

https://f-droid.org/packages/app.flicky/

https://f-droid.org/en/packages/app.smarttube.fdroid/

https://www.sendfilestotv.app/

Blocking ads usually helps performance, most ad networks are trash