Getting glitches recording back into Cubase

[emotive]

I was using Scope to route audio from Cubase and now I am routing it back but in any case there are glitches, which I thought were just in the playback, i.e. SPDIF data stream but now I am not sure.

[Mr Arkadin]

Have you tried a lower ULLI like 13ms for example?

[garyb]

first, is EIST (Enhanced Intel Speedstep Technology) Turbo and hyperthreading turned off in the bios?

have you disabled any USB controllers sharing IRQs with the Scope card in the device manager?

[emotive]

Thanks, I wondered about lower ULLI (I thought higher is best for mixing) so will try that.

I will look for IRQ conflicts.

Using AMD CPU.

[emotive]

No IRQ's are being shared between the Scope PCI cards and USB ports (only EHCI controllers and OHCI).

Still getting glitches in recorded audio going back into Cubase.

I was always getting glitches on playback but it never mattered as I was rendering to mp3.

A bit disappointing even though I've learned a lot out of the exercise so could it be the fact I am using two DSP systems, i.e. UAD in Cubase and SC as the audio card?

[JoPo]

How is your recording system ? I can read you use spdif ? Is UAD just a vst plugin card ? Can you increase its latency ? Is there, somewhere in your system digital output linked to any digital input, if there is, check which one is master & slave.
When you have glitch, can you see a dsp meter (in cubase or uad) reaching red ? This could inform you what (cubase / uad / scope) generates glitch...

There is no reason you can't find the issue.

[garyb]

AMD processor?

then disable Cool N Quiet or any other power saving, power stepping setting.
some basic setup info is here:
http://forums.planetz.com/viewtopic.php?f=3&t=31345

[emotive]

AMD processor?

then disable Cool N Quiet or any other power saving, power stepping setting.
some basic setup info is here:
http://forums.planetz.com/viewtopic.php?f=3&t=31345

It's called "Over Temperature Protection" in UEFI motherboards, which I've disabled. In response I have installed a program called SpeedFan to monitor temperatures.

I have no i/o at all, only what is happening in Scope, e.g. there is a single SPDIF output going to a TC Electronic BMC-2.

I changed the PCI Express and sleep settings, as per that article.

I also unchecked the settings in UAD that reserve DSP and provide extra buffering to see how it goes.

As VST/Disk Meter in Cubase is near zero.

CPU is 13% with RAM at 18%.

Haven't done the Aero stuff but my understanding is it uses the GPU anyway so if anyone has scientific knowledge about that it would be helpful.

[garyb]

cool n quiet or whatever its current name is really does need to go, seriously.

[emotive]

cool n quiet or whatever its current name is really does need to go, seriously.

It is gone, thank you very much

[garyb]

i don't think over temp protection is it.
cool n quiet and EIST idle the cpu a a low level and then raise voltage as the load increases. it's power saving not thermal protection.

it can also be called Optimized Power Management, AMD PowerNow!, E-Stepping, etc.

also, several AMD processors offer a turbo mode.

[emotive]

Hi Gary,

I found those options and turned them all off, but I was still getting glitches so have decided to try external clocking and will report back.

Thank you for all your good advice.

P.S. I had the network going too but if it's working post my next test, I can only assume that the clocking is deficient

[emotive]

It was the clocking that is at issue, so obviously it's the hardware that is at fault (never mind the software).

[garyb]

if it's clocking, that is user error or broken hardware...

[emotive]

if it's clocking, that is user error or broken hardware...

Not at all.

If it's working with an external clock generator then it is the clock in the card that is deficient but not necessarily broken.

In other words, windows doesn't like the internal clock of the card in terms of its' multimedia scheduling process.

I was always suspicious of this but equally am I suspicious that using an external clock was not offered as a remedy or fix when clearly it is.

[garyb]

wrong.

you can't be the only one with such a mysterious problem.

there are different clocks involved. the audio clock can only have one master. it's the card, unless you decide otherwise. if you use an external clock, how is that connected to the card? how have you set up sync in the samplerate window?

there simply aren't any issues with the ASIO driver and Cubase, not in win95, win98, XP, Vista, win7, win8 or win10.