X370 taichi: problematic USB 3.0 ports.

Hello all!
I'm struggling with audio dropouts using XR18 as an audio interface.
My mb is Asus Prime X370-A
To this topic - I'm highly guessing that it's linked with X370 chipset somehow.
That it doesn't depend on a concrete mb.
The OS is Win7 64-bit SP1, CPU: AMD Ryzen 1800x
Soundcard: SB Audigy2 (I've took this mb because of the Audigy2 that uses PCI slot actually). Currently the soundcard is OFF in the Device Manager.
XR18 is used as the audio interface via USB 2.0 port. I've tried almost all USB ports, just maybe I need to try it with other 3.* ports. But here is no luck :(

The drivers are fresh (for AMD chipset and NVidia).
Pauses in sound becomes with random intervals. Seems that it doesn't depends on X-Air ASIO driver's buffer setup. 16 samples or 2024 samples buffer gives the same dropouts. Almost no clicks&glitches (only on the lowest buffer of 4 samples).
I've used LatencyMon to catch the problem but it did show that I have troubles just once. Probably it was a "false hit", some coincidence (I've ran DAW and did inserted sound tracks plus to just playing something in Winamp). I can't repeat to that LatencyMon's will conclude the issue again.

Also I've tried to catch the root by checking if some hard pagefault will happen in the same time of an audio dropouts. No luck. It can happen even without hard pagefaults counted at all.

I'm completely sure that this concrete XR18 mixer works fine. I've tested it on my friend's PC laptop (Acer Aspire, 2-core) and it worked just fine - no dropouts, no any troubles. The same USB cable was used.
I hope that maybe my message will help to understand the real root of this evil buggery.
I'm ready to put LatencyMon's report(s) here if necessary. Would be good if the responsible developers will take a look at this problem.

I hear these clicks sometimes trhu OPTICAL cable, so the problem is somewhere in mb. Reboot fixes the issue until next time it happens.

I'm thinking this could potentially be a PSU power supply issue rather than a motherboard/driver problem.

USB 3.1 is controlled through the CPU with Ryzen, so I suspect its power delivery is also coming from the same 12V supply that supplies the CPU, someone please correct me if I'm wrong.

The USB 3.0 and 2.0 ports would be getting power from the 5V supply on the power supply instead. If you've got a lower end or iffy power supply then this could potentially be the root of the problem, especially if you're loading up the USB 3.0 and 2.0 ports with multiple devices, or doing long cable runs where you'll also experience extra voltage drop across the cable.

10 meter? Dang!

That's almost 33 foot.


And a hub too?




hehehe Does it pick up AM/FM radio signals?? That clik clic you hear may be a bad spark plug wire on the neighbors car 

Please update us if the situation changes. I am very curious to see how your expansion card works long-term.