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

Blocking ads usually helps performance, most ad networks are trash

Yes - it replaces the launcher (your home page, I guess you could say), but you can still download apps from the Google App Store and use them (such as Plex).

I have used FLauncher and now use Projectivity, and it is a great way to get rid of all the ads and bloat while keeping the TV fully functional.

just a warning about jelly is that you have to setup your own home host site. plex already comes with one it youre hoping to listen to your music on the go.