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Emby Lag on 2 LG QNED TVs

Pezza371887

By Pezza371887
in LG Smart TV

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Pezza371887

Pezza371887 1

Posted
Posted (edited)

Hi All,

I recently upgraded my old LG TV to a QNED and also brought one for my daughters bedroom.

Both have the latest emby app installed however they both suffer from extreme lag to the point the apps unusable. When I watch emby on the android app there are no issues.

All devices are connected to WiFi which is a unifi U6 LR ap.

Emby server is running on a Synology ds415 play.

I've rebooted the router, AP, synology etc however is slow to load, search and when playing i just get a spinning wheel of death.

Any ideas would be greatly appreciated. 

Edited by Pezza371887
Luke Emby Team

Luke 42906

Posted
Posted

OK we'll take a look at it. Thanks.

SamES

SamES 1123

Posted
Posted

Are these TV's both the same model (32LR60006LA)?

If so, they are 32" and only 1080/FHD displays, they can't natively play 4K content.  That means that any 4K media will need to be transcoded.  Whether that is successful depends on how capable your server is. What hardware and specs is your server running on? 

We might need to adjust something to ensure that it never tries to DirectPlay 4K on these models and goes straight to transcoding, but regardless, if your server is not capable of transcoding 4K content down to 1080p fast enough then you will still struggle with playback.

Pezza371887

Pezza371887 1

Posted
  • Author
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The main TV in our lounge is a 43QNED87A6D. Do you have any settings you can suggest changing on the server or emby app on my daughters TV to test?

Thank you 

SamES

SamES 1123

Posted
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Does it play OK on the 43QNED87A6D? If not, can you post any ffmpeg logs from the server for a test on that TV?

What are the server specs? When we understand that better, then we can review if there are any options to improve playback. Thanks

Pezza371887

Pezza371887 1

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Hey,

The 43QNED87A6D seems much more reliable and the whole emby app experience is much more responsive.

The app on my daughters TV is really slow and lags even moving around to select a film.

SamES

SamES 1123

Posted
Posted

Yes, unfortunately the 32LR60006LA is a low-end device, so it won't have a powerful CPU for app navigation, etc.  The client will try and adapt to that by limiting some UI animations, etc, but performance will possibly still be average which is probably also going to be the case for other apps such as Netflix, YouTube, etc.

As it is only a 1080p device, any 4K content must be transcoded to 1080p.  This will require you to have a reasonably performant server, or otherwise stick with content that is already 1080p rather than 4K.

You will also need to avoid any graphical subtitles as they will also need transcoding and burning into the video. Stick with text based subs.  Finally, best to avoid TrueHD and DTS audio tracks as they are also not likely to be supported and will need some conversion, though less intensive than video conversion.  The points regarding subtitles and audio tracks is actually true for all recent LG models, including your 43QNED87A6D as even higher spec units still need conversion on the server for these audio and subtitle formats.

Pezza371887

Pezza371887 1

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  • Author
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All other apps such as Netflix, disney+ and prime function fine and without any lag at all.

Are there any settings to try and make this more responsive and reliable on this TV as my old 1080p lg TV which the 43 inch one replaced never had these issues and always 8 years old.

Happy to try any suggestions

SamES

SamES 1123

Posted
Posted

Is the lag just during playback, or all the time such as when navigating?

Netflix, Disney,  etc all have multiple resolutions pre converted on their servers, so it just sends you the version that it knows your TV can support. Emby can do that two if you want to obtain/convert multiple versions of different resolutions and keep them all on your server (which I don’t expect you would really do),  but by default it tries to convert on the fly which is where it is different to Netflix, etc and hence a more capable server becomes important. 

What are the server specs?

SamES

SamES 1123

Posted
Posted
11 minutes ago, Pezza371887 said:

my old 1080p lg TV which the 43 inch one replaced never had these issues and always 8 years old.

What model number was that? Are you sure it was only 1080p?

 

Pezza371887

Pezza371887 1

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Emby is running on a Synology DS415 Play with 4 disks. This has been my setup for over 8 years.

Emby on my daughters tv is pretty much unusable. From loading the dashboard, searching, browsing library and then playing a film. If the film plays it plays about 5 to 10 seconds the stops. 

I can try take a video if that helps?

SamES

SamES 1123

Posted
Posted
1 hour ago, Pezza371887 said:

Emby is running on a Synology DS415 Play with 4 disks. This has been my setup for over 8 years.

Emby on my daughters tv is pretty much unusable. From loading the dashboard, searching, browsing library and then playing a film. If the film plays it plays about 5 to 10 seconds the stops. 

I can try take a video if that helps?

That sounds pretty slow. A video would help.  Make sure it has a good 5GHz wifi signal, not 2.4GHz

Neminem

Neminem 1838

Posted
Posted

@SamESHere are the specs for the DS415 Play.

Synology_DS415play_Data_Sheet_enu.pdf

Its a Atom processor and I don't expect it to be able to do much 4K to 1080p transcoding.

I have looked at the logs 

>>>>>>  User policy for emby
              Enable Playback Remuxing: True
              Enable Video Playback Transcoding: True
              Enable Audio Playback Transcoding: True


>>>>>>  Processing Plan
        Name                                        CanDoInHW  WillDoInHW  Reason                                                 
        Copy video stream                  >> False      False       Software Codec                                          
        VideoInput                               >> False      False       Not a hardware decoder                                  
        VideoOutput                             >> False      False       Not a hardware encoder                                  
        Copy video stream                  >> False      False       Software Codec                                          

>>>>>>  Video Processing Steps for [0:0]: H.265 (HEVC)
        Step                    HW-Context   Format       SW-Format           Size   Next
        HEVC                 >> -            yuv420p10    yuv420p10      3840x1600 >> 

20:32:33.314 elapsed=00:00:00.50 frame=  480 fps=0.0 q=-1.0 size=N/A time=00:00:00.05 bitrate=N/A throttle=off speed=0.103x   

@Pezza371887if you look at what I have marked in RED That should be over 1 for you to have a good experience.

So you should stay with 1080p if you want to have a good time with that NAS as your server. 

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