A:AnswerI think so. I installed 2 Apps not listed in the main search screens and they work well. My Amazon account helps a lot. The only thing about the 55" is that you need to use the TV controller to use the streaming and apps usage and silence the system controller. I found that controlling the sound with one controller will give sound from 2 sources.
A:AnswerYou can clear the cache on all of you apps. Remove any you don't use. Or any not using at the current moment. Make sure to clear cache and data first before removing.
It's a giant pain I know. Especially since we all know what most of your storage is wasted on, and it's not the apps we personally choose to add to the TV.
They say you can add external storage/memory using the USB. Like with a flashdrive. But I guess only certain ones work.
A:AnswerI use either a Bluetooth sound bar. Or used Bluetooth speakers for a while. They seem to work much better then speakers you plug in to the TV. They always stopped working as well.
Ever since my speakers stopped working over a year and a half ago. With mine the speakers won't turn on.