and where would i get a dts signal from? is it just blu ray? or also from ahem downloaded blueray rips?
To clear up the DTS issue,
The TV cannot decode or pass through DTS.
Commond devices that use DTS are: Blu-ray players, consoles, PCs, Apple TV, NVIDIA Shield.
All of these devices can decode the DTS before it is sent to the TV for you i.e. you just disable bit-streaming in the settings for DTS content.
So who does this issue affect?
People that use the internal applications to watch films which feature DTS or stream DTS content from internal apps basically.
Every device I know of as a clear workaround for this because in truth, many TVs don't support DTS so we've hard built in software decoding solutions on devices for years.
For example, why would Sony sell a console which NEEDS a DTS decoder on the TV set. It doesn't make economical sense to them as they'd want FULL compataibility for thier device.
So if you download a film from the internet and want to watch it on the LG CX's internal app and it has DTS, you are screwed. If you want to play that film off of a PC, PS4 Pro or Blu-Ray internal payer, you can set it to output in LPCM.
If you have an AVR, just connect devices to the AVR and it'll decode the information for you.
If you have a gaming PC, plug one HDMI into the TV from the PC and another into the AVR and get the PC to run sound via the AVR and you watch content via the TV (this is a workaround if you want HDMI 2.1/120hz AND DTS).
Yes, I've researched this topic in detail because I'm a loser.