Audio Drop Outs in Cubase Pro 13

Hi, this is my first post on this forum although I´ve been using Cubase since the nineties. I recently migrated from PC to MAC. My setup is now MAC M2, 64 GB RAM, UAD Apollo X6 on Cubase 13 Pro. I get dropouts when recording audio. Strange thing is that Cubase is showing the complete graphic of the audio file, but I can hear the drop out when playing the recorded audio file. Upon saving and closing the project, then reopening it again the drop out is now visible in the graphic of the audio file. I have set the Apollo X6 to be host for the clock. I have also experimented with different clock settings to no avail.
Here is a screenshot of the audio file before saving and closing the Cubase project:
Screenshot 2024-02-10 at 12.26.37
Here is the same audio file after opening the project again.
Screenshot 2024-02-10 at 12.27.30

There are now plugins in the project, just midi and audio files.
I have never experienced anything like this on Windows.
I have sent a request to Universal Audio, but so far I haven`t heard from them yet.
Does anybody know what’s happening here?

Hi and welcome to the forum,

Have you tried to increase the Buffer Size, please?

Hi and thank you.
No I haven`t tried that. I’ll do it now.

Tried it now at different buffer settings. It didn´t help. Strange thing is that it occurs in the same bar in Cubase all the time. Starting recording at bar 1 it happens just after bar 32. I updated the software on Apollo X6 to 11…1.0, but it didn´t help. I have also set the ASIO-Guard level to high, Processing Precision to 64 bit float, activated Multi Processing, Asio Guard Adjust for Record Latency. Disk Preload is 2 seconds, Record Shift 10 samples and Volume Automation Precision 8 samples.

This is my last recording with these settings:
Screenshot 2024-02-10 at 16.43.14
The drop out occurring at the exact same place all the time.
Screenshot 2024-02-10 at 16.43.48


You are on Mac. Isn’t your drive formated as ExFAT by any chance?

Yes I do. Should I use APFS instead?


It’s much better to use Apple native format. ExFAT is useful only if you want to use the drive on both Mac and Windows. But there are done reading/writing issues.

Thanks a lot!
Formatted my external drive to APFS and it solved the problem!
I´m new to MAC so it didn’t occur to me that the problem could be the file system of the disk.

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