Haven’t read so can’t tell you but you will find info at https://leminal.space/post/11699480

Can second that email works great to send Epub, never had issues in years

Home assistant has a voice assistant but it isn’t a voice assistant. Also, you are correct it is made to control a smart home (at the moment) that also include music threw external provider (or local files) but you can’t search the internet threw it. You can either install it locally or pay for home assistant subscription which include voice assistant threw cloud.

Redlib ?

Give it a shot, description from fdroid says it supports subtitle download.

Long time I haven’t used it but nova video player should do it

It is a good voice assistant but it isn’t an ai voice assistant, Also only works for your home assistant devices/entities unless you link it to gpt

ZigBee are not designed for high bandwidth applications but +1 for Home assistant

If I were you, I would try to disable some/all of the image features your TV has in settings. Could be those settings that create soap opera effect.

I’m not 100% sure but I have always read that playing movie at higher frame rate than source doesn’t make video looking better. To get best results, it is adviced to have your screen frame rate matching the one from source. That being said, can’t tell you how to achieve this on linux since I only watch stuff on TV using shield TV as a player.

Have you tried to press Enter to show bios setup? (Don’t have one, but that’s what a quick search tell)