I'm new to the QC and I'm at my wit's end

I’m new to the QC and I’m at my wit’s end—I could really use some advice.

I’m currently building a preset on the QC Mini, but I keep getting an error message: “Not enough CPU capacity, remove some blocks from The Grid first.”
The blocks I’ve lined up are just: Wah, Compressor, OD, Amp (Brit UBL Lead), Amp (Brit UBL Lead Clip), Noise Reduction, Cab, Chorus, Chorus, Rotary, Analog Delay, and Plate Reverb.
They’re just arranged in a straight line—no IRs or Captures are being used.
For the record, the editor shows CPU usage at 43%…

When I look at presets uploaded to the cloud by others, they often have much more complex setups with tons of blocks, so why am I getting this error?

I want to set up four scenes: Scene 1 (Crunch), Scene 2 (Crunch 2), Scene 3 (Clean), and Scene 4 (Lead).
I want to add an amp for the Clean sound, but I can’t select it because of that error.
Could someone please explain what’s going on? Is there any way to get around this?

Quad Cortex has 4 processing cores. 2 cores are used for the top two rows on the grid, 2 cores are used for the bottom two rows on the grid.

If you load up all of your blocks in the top two rows, you will reach closer and closer to the 50% CPU mark–in other words, maxing out the CPU allocated there.

You need to spread out your blocks across the top AND the bottom rows. At the end of Row 1 or Row 2, send the signal to Row 3. From here you should easily be able to add more blocks, and you’ll find that you can go well above 50% CPU for a whole preset.

I hope this helps.

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@DiffractionCircuit speaking wisdom. This is the way.

@fucchan I’m currently running 3 amps in scene mode, 1 of which is a capture, and plenty of effects. My CPU usage peaks @ 64% with the most resource-hogging blocks engaged. Happy to share the preset as a baseline for you to drop your own stuff into if you’d like.

If this is the preset I saw a picture of on FB, and you haven’t resolved the issue yet, I think you should upload it to the Cloud and let us check it out. You have it spread across the right lanes to optimize core usage, it looks a little suspicious to me that it’s not allowing you to add devices. It may just be the the UBL amp blocks are superheavy DSP-eaters.

TBF i think this is everyone’s first roadblock :joy: Sure was mine.

Guess perhaps its assumed QC will just ‘utilize ’ the whole dsp power on its own but once you understand the 4 lane setup it will make sense.

Another noob here. Is there a way to monitor usage % for each processor core?

For example, I’m clearly overloading the CPU in situations where the meter shows 40%. Several of these presets spill over two lines, sometimes 3.

I’ve figured out how to actually use the 2nd row (it should have been MUCH easier to figure out how to do this, lol). This seems to have helped with a couple presets.

But I’m just curious if there’s any sort of utility to breakdown each core’s usage.

Or maybe a spreadsheet listing how much CPU each block or capture is using?

There is not something like that. You can see DSP sort of for each block in a certain view on the QC, but however they designed it makes no sense to me

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I’m not in front of my QC , but I think that there is something similar in the ‘settings’ menu. Perhaps in the ‘diagnostic’ section. I remember seeing the % of usage of each dsp , but i’m not 100% sure.

ps: see this DSP Diagnostics menu and in the manual : Quad Cortex® User Manual 4.0.0<!-- --> - Neural DSP

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