LG OLED have a great picture, but the TV and Plex client have limitations.
Connectivity
Ethernet is 100 Mbps. Some media, such as 4K HDR Blu-ray rips, will burst over 100 Mbps. When this happens, you may (will) experience buffering during playback.
The TV WiFi will handle traffic above 100 Mbps when using WiFi 5 or 6 (WiFi 5 = 802.11ac on 5 GHz, WiFi 6 = 802.11ax).
Iāve a B7 OLED. Movies that buffer when connected via Ethernet do not do so when using WiFi.
Audio Codecs
Using the Plex app on the TV, Dolby Digital, Dolby Digital Plus, including Atmos, and AAC direct play. They can also be passed to audio equipment via HDMI-ARC/-eARC.
TrueHD and all DTS formats will be transcoded by Plex Media Server. They cannot be passed to audio equipment via HDMI-ARC/eARC.
LG also blocks DTS passthrough for devices connected to HDMI inputs on the TV.
Subtitles
If the media is direct streaming (vs direct playing), enabling any subtitle results in a video transcode and Plex Media Server burning the subtitles into the video stream.
Enabling PGS or VOBSUB subtitles results in a video transcode so Plex Media Server can burn the subtitles into the video stream.
SRT subtitles direct play. However, if the audio is transcoding, enabling SRT subtitles results in a video transcode and subtitle burning (since media will be direct streaming)
If Burn Subtitles = Automatic, enabling ASS subtitles results in a video transcode and subtitle burning.
If Burn Subtitles = Image Formats Only, ASS subtitles direct play, but are treated as text subtitles. Formatting such as color and position are ignored.
Synology
Most Synology NAS struggle with subtitle burning, unless they have an Intel Xeon CPU.
On Linux based systems, subtitle burning uses the CPU, even when the video is using hardware accelerated transcoding. Furthermore, the process is single threaded, using only one of the CPU cores.
Low power CPUs, such as the Celeron, simply are not strong enough to burn subtitles in real time in higher bit rate media such as 1080p Blu-ray rips.
LG G2 OLED Reviews
flatpanels.com ā confirm 100 Mbps Ethernet port, see comments section of review.
rtings.com ā confirm no DTS support.