Playback Issues - Audio/Video & Power

Help with audio & video playback issues, TV display type recognition & compatibility, HDCP messages, troubleshooting playback errors, advertisements, and resolving power issues.
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Mjross33
Level 7

Roku Ultra Audio Lag with LG HDR TV

Audio Lag on 4k content. Nothing seems to work. Volume mode - off, no improvement. Switching to stereo - no improvement. Really frustrating. 

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3 Replies
StreamerUser
Level 15

Re: Roku Ultra Audio Lag with LG HDR TV

Which model Roku and TV do you have?

How is your Roku connected? (e.g. directly, or through a switch/AVR).

Have you adjusted the lipsync settings in the LG's sound settings? (Settings/Sound/AV Synch adjustment).

 

 

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Mjross33
Level 7

Re: Roku Ultra Audio Lag with LG HDR TV

LG UM6900PUA

Ultra 4660X2

Marantz NR1608 AVR

The issue is worse on 4K content. I tried the LG sync adjustment but it doesn't have an impact. 

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StreamerUser
Level 15

Re: Roku Ultra Audio Lag with LG HDR TV

If you are connecting through the AVR, connect the Roku directly to the TV (with ARC to the AVR) and see if the issue persists.

Or vice versa if connecting to the TV - connect through the AVR instead.

Make sure you enable CEC/verify any lipsync settings in the AVR.

Make sure you enable BYPASS when enabling AV Sync adjustment in the LG.

FYI, LG has a history of AV sync issues (specifically, delayed audio) in every model year for years, which they are continuously attempting to address with firmware updates.

You should probably refresh the HDMI/CEC (including lipsync) handshakes:  power everything off for several minutes, then power your AVR completely on, then power your TV completely on, then power your Roku on.

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