7-8 notes of Bazille at 96KHz/HQ maxing a Ryzen 5800x?

[rafa1981]

Hello,

I have a new build based on a Ryzen 5800x, a Biostar B550GTA and a good'old RME Hammerfall HDSP9632 (the motherboard has a legacy PCI slot).

I was basically expecting CPU god mode, but 7-8 notes of U-he's Bazille at HQ without MC (multicore) enabled brings the RT CPU over 100%. The sound crackles just by playing two notes of the "Digital Dreams" factory patch.

I'm running on Reaper 6.34, 96KHz 256 samples of latency. Bazille version is just today's update.

If I use the Windows WDM driver instead of ASIO for the sound card it doesn't crackle as early as by pressing two notes, but it still reaches 100% RT CPU and crackles with 9-10 note polyphony.

I'm totally lost at what I should look for. Are these figures expected?

[Viktor [TUC]]

Hi rafa,

96 kHz is rather demanding, for starters. The Digital Dreams patch also stacks two voices per note, so that cuts your max voice count in half.
Your CPU, according to the internet, has a clock speed of 3.8 GHz. Without Multicore enabled and HighQuality on, one single core then plays 7-8 notes at 96 kHz with some patches, you say. So that would be 14-16 notes at 48 kHz, on one core.
Honestly, that sounds about right.

Viktor
u-he team

[pdxindy]

Yup... I run Bazille at 96khz cause it sounds better. It is hell on the cpu I use multicore option then bounce to audio.

[rafa1981]

Thanks guys.

I just wanted to run at 96KHz so:
-Oversampling filters for plugins don't needed to have cutoffs near the audible band (even though I doubt I can hear 18KHz anymore).
-Feedback loops inside plugins sound better, as the sample time decreases (Bazille).

Shame I have to compromise, buying a 5900x/5950x and enabling multicore is still an option. 64KHz samplerate might be another solution.

Diva is famous for giving the CPUs a workout, but Bazille is no slouch either.

[DuX]

64kHz is an interesting sample rate. How did you come up with it and how can you set it up?

[rafa1981]

My old RME HDSP 9632 soundcard has it, so I can use it on REAPER. It even has 32KHz.

But I suspect it will be asking for trouble with some plugins.

[tony10000]

Sure!

- High sample rate
- CPU hungry VST
- High polyphony
- Single core

You have to look at the single-core performance numbers of your CPU as well at the CPU speed.

Single core performance of the 5800X is good...still lower than the Apple M1, though:

https://www.cpubenchmark.net/cpu.php?cp ... 0X&id=3869

Do you have high-performance power settings enabled on Window 10 so it can run at full Turbo speed?

[tony10000]

Old thread on the topic of 96K:

viewtopic.php?f=1&t=444916

[zerocrossing]

Real musicians use 48 kHz 24 bit audio and like it.

[rafa1981]

Do you have high-performance power settings enabled on Window 10 so it can run at full Turbo speed?

Yes.

The weird thing is that there is more crackle with the ASIO driver than with the WDM one. I guess that this is a question for the RME forum.

[tony10000]

Do you have high-performance power settings enabled on Window 10 so it can run at full Turbo speed?

Yes.

The weird thing is that there is more crackle with the ASIO driver than with the WDM one. I guess that this is a question for the RME forum.

Check it at 512 rather than 256.

[rafa1981]

Check it at 512 rather than 256.

Sameish. If I leave the polyphony of the patch at 12 this is what happens (The latencies below are the ones reported by Reaper, not measured):

-ASIO, 256 samples, 3.1/4.3ms latency. It crackles and is unplayable.
-ASIO, 512 samples, 5.8/6.9ms latency. It still crackles and is unplayable.
-WDM, 2x256 samples, 2.6/5.3ms latency. Fully playable, no crackle.

The thing is that it seems that ASIO is performing way worse than WDM on this machine/scenario. Quite weird. Asking on the RME forum...

[Viktor [TUC]]

Maybe check if you have the correct ASIO driver installed for your particular audio interface model, and if it's up-to-date. You're not using something generic like Asio4All, right?

[AnX]

Real musicians use 48 kHz 24 bit audio and like it.

I wonder if Oscar Peterson used those, have to look it up

[rafa1981]

https://forum.rme-audio.de/viewtopic.ph ... 17#p174717