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Dear All,

I have a Firestudio Mobile, which I used for many years without problems on my Windows7 PC.

Recently, I upgraded my PC to a new machine, I encounter a few strange things:

1). Sometimes, the FIrestudio Mobile is detected an enabled at boot time, sometimes the red light is blinking. If this happens, I usually unplug and replug the firewire cable, and usually then the Firestudio Mobile is detected.

2) The communication between audio software and Universal Control seems to be screwed up.
Example: I select 48.0 kHz/ 128 BufferSize in the software (e.g. VCV Rack, or Reaper), but then Universal Control jumps to a different settings (e.g. 96 kHz / 64 ). This mismatch is clearly audible in the audio running at the wrong speed. It often takes several attempts to the 'matching' settings.

3) For some settings, I get clear glitches in the audio (probably related to above described mismatch of buffer sizes the software uses and the hardware uses.)

Attached is a small screen recording of attemts to change the audio settings in reaper. But this problem is not restricted to reaper.

Here are some details about the machine:

AMD Ryzen 9 5900X 12-Core Processor 3.70 GHz
X570 AORUS Pro board
IEEE 1394-Hostcontroller (Same as in old PC; newest driver)

Edition Windows 10 Home
Version 20H2
Installiert am ‎11.‎04.‎2021
Betriebssystembuild 19042.1237
Leistung Windows Feature Experience Pack 120.2212.3530.0

Has anybody experienced something like that before, and has an idea how to fix it?

User avatar
by groumpf on Sat Nov 06, 2021 6:50 am

I realized that I have the same problem.
I had CPU issues with plugins that usually worked well and what I found is that the interface was in 96kHz/64samples while my normal setting is 44kHz/256samples.

As I'm writing the settings are 44kHz/128samples.
It is changing all the time !

How can I fix these settings ?

Driver version : 5884
Windows 10

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