# Sync issues between Riffer (version 3.1.2) and Logic Pro 11.1
**URL:** https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120
**Category:** Help & Support
**Created:** [November 18, 2024, 9:55am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120 "2024-11-18T09:55:12Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [November 18, 2024, 9:55am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/1 "2024-11-18T09:55:13Z")
“I’m encountering sync issues between Riffer (version 3.1.2) and Logic Pro 11.1. The playhead position in Logic doesn’t align with Riffer(Please see the attached ). I’ve also tried changing the sample rate from 44 kHz to 48 kHz, but the issue persists. Could this be a bug, or might I be doing something wrong?”
> **[Skjermopptak 2024-11-18 kl. 10.37.52.mov](https://wetransfer.com/downloads/2875a1df24078cc6dd0dec37b8b71cd420241118094512/d1e671?t_exp=1732182312&t_lsid=62ae966c-a77f-45ba-b90a-6a6cb7fce6be&t_network=link&t_s=download_link&t_ts=1731923112)**
>
> 1 file sent via WeTransfer, the simplest way to send your files around the world
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### Author:  [@Audiomodern](https://forum.audiomodern.com/u/Audiomodern)
#### Post date: [November 18, 2024, 10:19am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/2 "2024-11-18T10:19:01Z")
Hi @Hicham ,
Thanks for sharing the video, this is strange. I see you have a loop region enabled, do you get the same results without a loop region in Logic?
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [November 18, 2024, 12:28pm UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/3 "2024-11-18T12:28:08Z")
Yes, same result without loop region: [Unique Download Link | WeTransfer](https://we.tl/t-p6U26R5QsK)
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### Author:  [@Audiomodern](https://forum.audiomodern.com/u/Audiomodern)
#### Post date: [November 19, 2024, 6:33am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/4 "2024-11-19T06:33:24Z")
This is very strange, we haven’t received anything similar using Riffer with Logic.
What is you device model/make? We will need to try and replicate this.
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [November 19, 2024, 8:17am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/5 "2024-11-19T08:17:12Z")
I’m on a MacBook Air M2 2022 - 16GB, macOS Sonoma 14.6.1.
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### Author:  [@Audiomodern](https://forum.audiomodern.com/u/Audiomodern)
#### Post date: [November 19, 2024, 9:46am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/6 "2024-11-19T09:46:07Z")
Can you please try to run Logic using Rosetta to see if this fixes the issue?
Here’s how you can do that:
• Close Logic Pro and from the Applications folder, select Logic Pro application.
• Right-click Logic Pro app and select Get Info (or press Cmd + I)
• Make sure Open using Rosetta is checked:
• Re-open Logic. It should now indicate it is running as Rosetta
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [November 19, 2024, 10:53am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/7 "2024-11-19T10:53:12Z")
Didn’t seem to work; could it be some logic settings causing the issue?: [Unique Download Link | WeTransfer](https://we.tl/t-06OQRQKpyX)
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### Author:  [@Audiomodern](https://forum.audiomodern.com/u/Audiomodern)
#### Post date: [November 19, 2024, 11:26am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/8 "2024-11-19T11:26:16Z")
Is this happening in any other DAW? if you have another DAW that you can check?
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [November 19, 2024, 12:04pm UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/9 "2024-11-19T12:04:15Z")
The VST version seems to work in Ableton Live 10 Intro. However, the AU version doesn’t appear in Ableton, while in Logic, only the AU version.
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### Author:  [@Audiomodern](https://forum.audiomodern.com/u/Audiomodern)
#### Post date: [November 19, 2024, 12:46pm UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/10 "2024-11-19T12:46:36Z")
AU plugins do not support MIDI out in Live, this is why the VST/VST3 version is required if you want to route midi from a MIDI plugin. It is a format limitation unrelated to Riffer or any other MIDI app.
However, the AU in Logic should not produce this issue. We will take a closer look to see what might be causing this. Thank you for your patience.
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [November 19, 2024, 1:05pm UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/11 "2024-11-19T13:05:48Z")
I appreciate you taking the time to investigate , and thank you for your support .
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [July 7, 2025, 12:12pm UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/12 "2025-07-07T12:12:08Z")
Hi, I just wanted to follow up as I haven’t heard any updates regarding this issue. Have you had a chance to look into it, and are there any developments expected soon?
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### Author:  [@Audiomodern](https://forum.audiomodern.com/u/Audiomodern)
#### Post date: [July 8, 2025, 7:11am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/13 "2025-07-08T07:11:35Z")
Hi, we’re unable to reproduce this issue in Logic Pro. Since you mentioned it doesn’t occur in Ableton Live, could you please check that the MIDI I/O settings are identical in both DAWs? My best guess is that it may be related to either the sample rate or buffer size settings in your projects.
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### Author:  [@Hicham](https://forum.audiomodern.com/u/Hicham)
#### Post date: [July 8, 2025, 1:30pm UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/14 "2025-07-08T13:30:27Z")
Hi,
After some more testing, I found that increasing the I/O buffer size in Logic Pro to 1024 samples resolved the sync issue.
Is this expected behavior? Does Riffer depend on a higher buffer size to run reliably on an M2 MacBook Air?
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### Author:  [@jakasspeech50](https://forum.audiomodern.com/u/jakasspeech50)
#### Post date: [July 15, 2025, 3:47am UTC](https://forum.audiomodern.com/t/sync-issues-between-riffer-version-3-1-2-and-logic-pro-11-1/2120/15 "2025-07-15T03:47:12Z")
> [@Audiomodern](#):
>
> Hi, we’re unable to reproduce this issue in Logic Pro. [tu](https://eldfall-chronicles.com/en-si/pages/skirmish-wargame) Since you mentioned it doesn’t occur in Ableton Live, could you please check that the MIDI I/O [Viberate](https://www.viberate.com/) settings are identical in both DAWs? My best guess is that it may be related to either the sample rate or buffer size settings in your projects.
It’s possible the difference is caused by mismatched MIDI I/O or audio buffer/sample rate settings