I have the same problem. MacStudio M1 Max with Monterey and Fireface 802. Rosetta works better as well.

Basically RME cannot be bothered to sort out the drivers in the new macs. It's been ongoing support headaches since M1.  I've noticed they don't seem to acknowledge it.   They have had plenty of time to get this right.

The driver is 4.02.

Logic runs fine natively with the other interface. I do have a few plugins that require rosetta, that does not seem to cause any problems even with native ARM Logic. I tested some logic sessions with stock plugins only with the same 'stuttering/looping' with the UC. I also made A/B comparison tests with several logic sessions testing both interfaces one after the other on the same session.

I don't think it is related to cpu usage in the conventional way because in that case playback would just stop (or playing distorted audio sometimes). In my case it keeps repeating a very small part of the session, like a mini-loop. I have a screenrecording i could send to you if that would help to understand the behaviour. And it keeps playing back that small loop until i stop it. It is very different to a normal cpu-overload. It seems to be triggered more easily on bigger sessions.

In my case with a cpu overload logic would just stop playback. I never had that kind of freeze in DC with a cpu overload, the bars would just fall down smooth normally.

Yes. There is software for monitoring, but i don't think it qualifies for a driver. It still works without it.

I have the same problem with Babyface pro fs with driver version 3.28 , which is the latest version. I cannot use the interface without putting Logic into Rosetta mode! There is no problem when i connect another interface or connect to the internal interface of the macbook pro (14" with M1 Pro & 16gb memory) Request the concerned people at RME to please solve the issue!

Thanks

Hi, The problem happens only when I use Logic Pro X with my BF Pro FS in Native mode. If I switch to another interface or the Mac's internal interface the problem stops completely. When logic is used in rosetta mode the session opens fine with my RME interface. This points to a driver issue which is causing the playback to stutter like mentioned by many in the above comments when Logic is running in native mode. I have tried with Logic's internal plugins or with plugins that run natively but the problem persists on the RME interface. No issues when used with another interface!

Have you updated your system ?

From Monterey to Ventura ( Just in case, Logic TNT versions no longer run under Ventura ! )
From Logic 10.7.3 to 10.7.6
From RME driver 3.28 to 4.06

Is there other software running like OBS or AudioHijack ?

Also try : Switch off Bluetooth

Do we have any solutions for this yet?

Your Babyface Pro is 'driverless' as well, just use it in CC mode. No TotalMix then, of course.  It would sure be interesting to see if Logic then behaves well...

I think that, when you get the suggestion to try CC mode from the founder of RME, perhaps you should at least consider taking his advice ;-)

Update:

It runs smoother with the following Logic Pro X audio settings:

Processing threads: Automatic (Recommended), before it was 10 (8 high performance cores)

Processing Buffer: Small, before it was Large

Multithreading: Playback & Live Tracks. before it was only Playback

Changing the multithreading setting has produced the most noticeable difference!

Further information about the multithreading function: (maybe helpful for the problem solution)

You can use multithreading to affect how Logic distributes the DSP load when a software instrument track stack is selected for live input or when multiple audio tracks are enabled for recording.

The Playback setting reproduces the behavior of earlier versions of Logic. When a track stack is selected for live input, or when multiple audio tracks are recorded, all of the DSP required for the input is processed by one processing thread-and thus by one available core on the computer.

The Playback and Live Tracks setting distributes the load across multiple threads when a track stack is selected that contains multiple software instrument channel strips, or when more than one audio track is being recorded. If the computer has enough cores and there are no other DSP demands on the computer, each live channel strip can be processed by a different core.

With the Playback and Live Tracks option, the system may be a bit more stressed. So if you don't have live tracks with high demands, track playback may be a better choice.

Has anyone found a solution to this? I get the repeated stuttering playback head where it keeps jumping backwards. This happens on moderate sessions so I know the system is by no means fully taxed. This does not happen in the same session with a cheap alternate interface. Now, if I stop all activity in Logic and let the session sit for 20-30 seconds it appears to not have an issue upon hitting play, however, if I quickly jump to another point in the song it will always begin having a stuttering playback head. I am running the latest kernel extension driver with the following:

Babyface Pro FS with kernel extension driver Version 3.28B (2)
Mac Studio M1 Max
macOS Monterey 12.6.3
Logic 10.7.9

Does the driver kit do this as well? I was thinking of giving that a try but read that has its own set of issues. This stuttering is very annoying and really hinders work flow.

Any feedback would be greatly appreciated!

Thanks
Andrew

Thanks for the reply. Upgrading the macOS is not an option at this time as I have my software running very smoothly and not willing to risk it. The suggestions you made and those in timroyko’s post actually helped quite a bit. So strange the lower buffer size helped (I tested this isolated and it does help with just the lower buffer size). This makes me think there is an optimization issue between the current drivers and Logic and/or M1/2 architecture.

One of the reasons I switched over to RME was due to their reputation of a history of solid drivers and driver support. I hope this continues moving forward and that they optimize the drivers for Logic and the M1/2 architecture. I understand Apple makes changes that can be difficult for software/hardware developers but unfortunately companies have to play by Apple’s rules if they want to keep that market share.

Good post! Maybe you remember some months ago I once described my 'stress test' on a Mac mini M1. At least fifteen apps active, playing music and rendering videos, browser with YouTube and several other tabs open, changing sample rates and what do I know further... there was one single short moment only when the Mac failed to play the 'empty trash' system sound and the played music had a tiny hiccup. Beside that I had no chance to provoke the Mac to show real problems.

Guitar Rig 7
Reaktor 6
Absynth 5
Battery 4
Kontakt 7
Massive X
These NIs all AUs no issue.
Plugin Alliance I can't say. Not sure if I have something from them.
M1 and M2 are well established and all plugin makers have plugin versions updated for this.
RME has a new driver 409 for Sonoma
Up to you waiting for a driver-update for an outdated computer system.