# Bug lipsync stops prematurely **URL:** \ **Category:** Unity SDK\ **Tags:** bug\ **Created:** [June 23, 2026, 2:48pm UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337 "2026-06-23T14:48:10Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![milamoleman](https://yyz2.discourse-cdn.com/flex004/user_avatar/forum.convai.com/milamoleman/32/3879_2.png) [@milamoleman](https://forum.convai.com/u/milamoleman)\ **Post date:** [June 23, 2026, 2:48pm UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337/1 "2026-06-23T14:48:11Z")
### What do you need help with? Bug report ### Installation method Unity Asset Store ### Issue area Lip Sync / Facial Animation ### Impact Major - a core flow is broken ### Unity version 6.3LTS (6000.3.17f1) ### Convai Unity SDK version 4.2.0 ### Target platform Android ### Where does it happen? Both sample and custom scene ### Short summary The lipsync cuts off sometimes even in a completely fresh project with only the samplescene this seems to happen. ### What happened? When talking to camilla or any other character the lipsync stops working at the end of sentences. It seems to be worse at the low latency settings (it happens earlier in the audio stream). if you set the streaming and latency to ring buffer cap 10 secs it seems to happen later in the audio stream. ### What did you expect? So a week ago this bug seemed to not exist yet so no idea what happened. It still happens with a completely fresh new scene with only the sample scene Tested on various devices and internet connections it seems to happen everywhere. The log below seems to fire before she is done speaking when the bug happens and after speaking when it does not happen. ### Steps to reproduce - Create empty project. - Download package from assetstore - Install lipsync sample. - Talk to character ### Unity Console errors or build logs 16:33:37.686][Info][LipSync]: [LipSync] TurnStats - Server: 536 frames | Received: 536 frames | Match: YES | Audio: 787920 bytes | Turn Duration: 6.15s | Audio Duration: 8.93s | FPS: 60.00 UnityEngine.Debug:Log (object) Convai.Runtime.Logging.UnityConsoleSink:Write (Convai.Domain.Logging.LogEntry) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Logging/UnityConsoleSink.cs:35) Convai.Domain.Logging.LogSinkExtensions:WriteIfEnabled (Convai.Domain.Logging.ILogSink,Convai.Domain.Logging.LogEntry&) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Domain/Logging/ILogSink.cs:52) Convai.Runtime.Logging.ConvaiLogger:DispatchToSinks (Convai.Domain.Logging.LogEntry&) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Logging/ConvaiLogger.cs:198) Convai.Runtime.Logging.ConvaiLogger:LogMessageUnchecked (string,Convai.Domain.Logging.LogLevel,Convai.Domain.Logging.LogCategory,System.Exception) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Logging/ConvaiLogger.cs:132) Convai.Runtime.Logging.ConvaiLogger:LogMessage (string,Convai.Domain.Logging.LogLevel,Convai.Domain.Logging.LogCategory,System.Exception) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Logging/ConvaiLogger.cs:103) Convai.Runtime.Logging.ConvaiLogger:Info (string,Convai.Domain.Logging.LogCategory) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Logging/ConvaiLogger.cs:348) Convai.Runtime.Logging.ConvaiLogger:Convai.Domain.Logging.ILogger.Info (string,Convai.Domain.Logging.LogCategory) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Logging/ConvaiLogger.cs:432) Convai.Infrastructure.Networking.RTVIHandler:HandleBlendshapeTurnStats (Newtonsoft.Json.Linq.JObject,string) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Infrastructure/Networking/Abstractions/RTVIHandler.cs:814) Convai.Infrastructure.Networking.RTVIHandler:HandleServerMessage (Convai.Infrastructure.Protocol.ProtocolMessage) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Infrastructure/Networking/Abstractions/RTVIHandler.cs:731) Convai.Infrastructure.Protocol.ProtocolGateway/DelegateMessageHandler:Handle (Convai.Infrastructure.Protocol.ProtocolMessage) (at ./Library/PackageCache/com.convai.convai-sdk-for-unity@1c0d01a815cf/SDK/Runtime/Infra ### I checked the relevant documentation, resources, and similar forum posts before posting. on ### I confirm that I did not include API keys, tokens, passwords, secrets, private character data, private conversation logs, or customer data. on ---
**Author:** ![K3](https://yyz2.discourse-cdn.com/flex004/user_avatar/forum.convai.com/k3/32/2611_2.png) [@K3](https://forum.convai.com/u/K3)\ **Post date:** [June 24, 2026, 10:03am UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337/2 "2026-06-24T10:03:41Z")
Hello, **Welcome to the Convai Developer Forum!** We are currently working on an update related to this issue, and we expect to release it soon. Once the update is available, please update the Convai Unity SDK and test again. ---
**Author:** ![paul.jermyn](https://avatars.discourse-cdn.com/v4/letter/p/bb73d2/32.png) [@paul.jermyn](https://forum.convai.com/u/paul.jermyn)\ **Post date:** [July 13, 2026, 12:59am UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337/3 "2026-07-13T00:59:20Z")
is there any update to this, i notice the SDK mentioned is 4.2 and the latest is 4.3 but the issue remains at least as far as i can see within the 4.3 SDK. ---
**Author:** ![K3](https://yyz2.discourse-cdn.com/flex004/user_avatar/forum.convai.com/k3/32/2611_2.png) [@K3](https://forum.convai.com/u/K3)\ **Post date:** [July 23, 2026, 8:24am UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337/4 "2026-07-23T08:24:18Z")
We’ve released a new update. Could you please check it and let us know if everything is working as expected? ---
**Author:** ![paul.jermyn](https://avatars.discourse-cdn.com/v4/letter/p/bb73d2/32.png) [@paul.jermyn](https://forum.convai.com/u/paul.jermyn)\ **Post date:** [July 24, 2026, 12:21am UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337/5 "2026-07-24T00:21:40Z")
Hi Kaan, I can confirm it is now working as expected. Thank you for your support. ---
**Author:** ![system](https://canada1.discourse-cdn.com/flex004/uploads/convai/original/1X/e60ef96aa7334c5ccf6682f6c6dbc20fcfa96b49.png) [@system](https://forum.convai.com/u/system)\ **Post date:** [July 27, 2026, 12:22am UTC](https://forum.convai.com/t/bug-lipsync-stops-prematurely/6337/6 "2026-07-27T00:22:14Z")
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