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How to change view from 16:9 in movies to fit full screen 
 
LG QLED B22 

I have problems with one of my WebOS TVs which looks like a speed problem, but when I do a speed check on my iPhone from just a few feet away the connection speed looks fine.  Thanks,  Bob

I output the sound from my LG 75UJ657A to external speakers through a bluetooth connection, but it doesn't automatically connect to the bluetooth device when I turn the TV on. Whenever I cycle the TV off and, then, back on, the TV asks if I want to connect to the bluetooth device, and I have to select "yes" with the remote. My smart phone automatically connects to all the bluetooth devices I've set it up with. When I start my car, my phone connects automatically to the car stereo/phone system, and it does the same with other bluetooth speakers I have. This is what I want my TV to do.
How do I get my LG 75UJ657A to automatically connect to the bluetooth device I've set up with it?

It is shameful that LG has removed support for DTS audio.
You can request LG to reenable it at change.org:
change.org/p/dts-dts-x-passthrough-support-for-2021-2022-lg-oled-tvs

I've seen an older thread on this topic but it doesn't look like anyone found a solution to disabling the screen saver, so I'll try a new one.
On virtually all my LG TV's (I have three OLED's and two LCD), the screen saver interferes with my music app (like Plex, Spotify or Amazon Music). I mainly use Plex for playback of my music which is stored on a central server (NAS) and from the app loaded on a Fire TV stick or cube. After about 20-30 minutes, the album art and other related music information (lyrics, song title, duration, etc) all goes black. If I run Plex (or Spotify) directly on the LG TV via the LG Content store app, the screen saver with fireworks always comes on in about 2 minutes. 
I've tried all the different methods to disable the screen saver function including turning off the Timers, Auto Power Off,  HDD Storage, etc. I also tried opening the hidden menus by pressing the mute button 5 times but that menu didn't have anything relevant. 
Interesting is that the screen saver doesn't come on when using Spotify on a Fire TV stick or if I playback music through a USB device. But i don't use those methods often, mainly Plex to access my music server where I have about 500 CD's stored in ALAC format.
Has anyone found a way to disable the screen saver function? I know the logic for having it (to prevent OLED burn in) but I'm not leaving the same image on for more than the song duration (about 3-5 minutes).  It's annoying to check the screen for the a music title or see who is on only to find a black screen looking back. Thanks for any help.