Unlikely.  The problem is almost certainly the Samsung TV.  I had similar and the lipsyn was behind the picture no matter what I did.  This was the same on a Playbase (Optical out) and the Beam 2 (HDMI).  I ended up replacing the TV with a Panasonic.  It is a know issue on some Samsung models.

Even with a newer TV like a Samsung Frame? Would eArc not make a difference in your opinion? 

Even with a newer TV like a Samsung Frame? Would eArc not make a difference in your opinion? 

I think you may well be fine with newer TVs. Not seen reported issues here. The TV i had was a 2019 model, Samsung UE40NU7120. 

Have you tried changing the HDMI cable for a different one, on the Blu-Ray player, just in case..?

Also, under Sound / Expert settings, is your Digital Audio format set to Pass-through so the signal goes from the Blu-Ray player to the Beam without any processing by the TV?

Finally, under General / External Device Manager, is Input Signal Plus set to On for all HDMI ports?

I set passthrough on the TV but the Blu-Ray player has its on settings which are PCM (no delay) bitstream unprocessed (seems to use PCM) bitstream convert to DTS (Causes delay) and bitstream convert to Dolby Digital which is my preferred method as it sounds the best but also causes a delay. I did try changing the HDMI but didn’t make a difference. I haven’t yet checked the input signal plus but will do once back from holiday.

i heard eArc can really help with lip sync when set to pass through and i know the Sonos Beam 1 doesn’t support that so that’s why I’m contemplating the Gen 2. 

I can’t speak to the eARC’s ability to help with lip sync, but Bitstream Unprocessed should be the optimal output from your Bluray player as it outputs the sound with the greatest efficiency, also passing through the TV without being processed either, leaving the Beam to do the decoding. 
Presumably from what you said originally, Bitsteam Unprocessed from your Bluray is still out of sync, even with pass-through on the TV?

It seems that bitstream unprocessed on the blu-ray is in sync but when checking the Sonos soundbar it’s only outputting at PCM which sounds like a lower quality 

I’m not sure how any part of that chain could output in PCM if you’ve selected Bitstream Unprocessed on the Blu-ray player and Pass-through on the TV. The only time I see PCM on my Arc is when the broadcast is in PCM 2.0, which is common for terrestrial TV’s SD channels.
You’re definitely playing a Blu-ray when you see PCM?

Sorry for all the questions… 

Hdmi 2.1 made lipsync correction a mandatory feature on eArc, while for earlier versions it was always optional with arc.

It still isn’t a magic bullet to fix lipsync issues, it is a 1 way communication, where the display will send a best estimate delay value to the audio device based on how long it needs to process the video frame.

The display has no idea how long an audio device will actually take to process the audio, which is why it’s a best effort guess coded into the display device software. Manufacturers are aware of the issues with lipsync and perform R&D into trying to find optimal settings for their different hardware and software. It is easier for them to find optimal settings for their own display and soundbar. The number of other manufacturer devices means it’s not realistic to test or try and optimise for everything available.

The simpler the audio stream the faster the audio device can decode it. So PCM is usually quicker to decode than any other audio stream.

Yeah it’s very strange. I was playing Reservoir Dogs Blu-Ray and it was outputting at PCM (bitstream unprocessed on blu-ray) and pass through on Samsung TV (although sometimes it reverts to auto and greys out the pass through option. I’m not sure if that is because I have a gen 1 beam which doesn’t support eArc? I’m happy for any questions and any help it’s much appreciated. I am tempted just to buy the Beam Gen 2 (I have 15% off) and if it’s the same just send it back but ideally if I can get the Gen 1 in sync on Dolby Digital that would be the perfect solution.

LPCM used on blurays is actually lossless audio, whereas normal DTS surround and Dolby digital are lossy.

A reason for the difference in sound between sending PCM vs DTS/DD is hdmi-arc only supports 2.0 PCM, but 5.1 for DTS/DD lossy.

Might be a stupid question, but when playing the Blu-ray which audio track did you select in the movie menu?

Blu-rays often have LPCM multi channel audio tracks as well as any of the various dts/dd formats. If the movie defaults to LPCM and the Blu-ray player is set to not convert (unprocessed) then you will only get stereo pcm because hdmi-arc can’t support a higher number of LPCM audio channels.

So a Samsung soundbar would likely have less issues as I have a Samsung TV and Blu-Ray player? 

I honestly just stick with the default track on the Blu-Ray as I assumed it just played the best available 

So a Samsung soundbar would likely have less issues as I have a Samsung TV and Blu-Ray player? 

Possibly. But I have a Samsung TV and an Arc (which uses eARC) and don’t have lip sync issues from, for example, the Apple TV that passes through. 
So you could be okay with a Beam 2 with eARC…

By the way, trading in your Beam 1 should give you 30% discount rather than using any 15% discount, unless you’re keeping the Beam 1.

I think I activated a 30% trade a while back which reverted to 15% when I didn’t upgrade within the time frame. I’ll probably keep the Beam if it’s only an extra 15% off.

I’ve no idea whether a bluray player has much ability to choose a ‘best’ track or it uses settings from the disc based on the studio preference. I did try few tonight but don’t have many discs with multiple audio tracks in english.

Where it could choose LPCM 5.1/7.1 or Dolby Digital it was inconclusive. My player chose PCM 7.1 over DD 6.1 EX and was more random when choosing PCM 5.1 vs DD 5.1

As a troubleshooting step do yet get the same behaviour if you disconnect the beam? The frame TV should accept the DD stream and decode it itself for the TV speakers.

Having a quick look at a manual for the Samsung Blu-Ray players I understand the audio output settings better. Having it set to PCM or Bitstream (Unprocessed) would be my choices.

PCM means the blu-ray player will decode the audio formats and send as PCM.

Bitstream (Unprocessed) means it will send the audio as is. So if watching a movie with the Dolby Digital or DTS audio track selected it will send Dolby Digital or DTS, if watching with a PCM audio track it will send PCM

Both of the Bitstream (Re-encode) options mean the blu-ray player is first decoding the movie audio track, then encoding it as DTS/DD before sending it. It may actually be this that is the cause of the audio delay and the player is actually sending the video and audio out of sync if it’s doing a poor job, rather than the Beam.

When I had an Xbox Series X it would have a 1-2 sec delay if I enabled Atmos for games. Long standing software issue with the Xbox and the only device I’ve owned that has given me lipsync issues. Set it to 7.1 PCM for games and everything was perfect.

To test the TV isn’t mangling the audio even though it is set to pass-through

With your Reservoir Dogs Blu Ray, set the blu-ray to output Bitstream (Unprocessed) and in the movie audio setting, make sure it is set to DD 5.1 or DTS 5.1 and not PCM when watching. If the Tv isn’t mangling anything then the Beam should receive the DD/DTS audio and decode it.

If I select a track within the movie it’s self then the Beam will output that on bitstream unprocessed. There is still a slight delay. It seems like it defaults to PCM when the top audio track is something the Beam doesn’t support like DTS HD or Dolby Atmos (I have Beam Gen 1) 

On a whole seperate issue, whenever I have PCM on the Blu-Ray player the audio stutters, I have tried unplugging the HDMI and plugging it back in which sometimes resolves this but after a while it reverts back (very frustrating) so I do prefer DD 5.1 as it sounds better and doesn’t stutter every few seconds but there I is a slight lag which is annoying as I focus on that.

The audio track selection makes sense, if the audio device says it doesn’t support it don’t choose it by default. Over hdmi-arc the PCM can only ever be 2.0 Stereo, so the DD could sound different depending how the blu-ray player is down-mixing 5.1 PCM to stereo or if it is only sending the Stereo mix.

The stuttering audio sounds odd (no pun intended). I’ve come across it with PCs before where drivers are usually always the culprit, or with refresh rate mismatches between the native video format and the display, but that usually exhibits picture stutters as well.

Thinking back to your original Q about would a beam 2 with eArc help solve it, without trying it’s impossible to say, but I’d only attempt it buying from somewhere with an easy return if it doesn’t help.

It could well be a software bug in one of the firmwares, that only shows up in certain combinations. The delay increasing when changing the output in the blu-ray player with the TV set to pass through suggests to me the player is introducing the delay when encoding to DD. It shouldn’t really impact though as the player is the source in control of timing for sending audio and video, so should have them in sync when sending.