I recently purchased a new LG OLED65C8 TV and with it a SanDisk Extreme Pro USB 3.1 SSD drive with a write-speed up to 380 MB/s, after reading these recommendations. I wanted to use this for recordings and time shift (Live Playback). Unfortunately it doesn’t work with time shift – only recording. I sent a request to customer service about this, and conclusion is:

• LG recommends HDD’s instead of flash drives. Old-fashioned big noisy hard drives which are hard to fit on the back of the TV.
• LG cannot recommend any devices – no compatibility lists exists. So customers will just have to buy one device at a time until finding one that works. That’s a very costly solution in my opinion.

Now I’m just waiting for burn-in to complete my LG customer experience…

Update: I got a second response from customer service, and unfortunately – as I suspected:

• Live Playback only works with magnetic disks, not any kind of flash device.
• This will not be solved/changed with a firmware upgrade.