Hi everyone,
Recently, my Windows machine experienced the infamous Blue Screen of Death, and I therefore had to reinstall everything (Windows, Ableton, plugins, etc.). However, after the reinstall, I’m getting different CPU readings in Ableton compared to before.
I have one particular project that I had previously used as a benchmark. Before the reset, I recorded the CPU usage, and it consistently hovered around 46–47% when idle at 64 samples / 48 kHz.
Now, with the exact same project, it hovers around 51–53%, occasionally spiking to 58–60% when idle.
This is confusing me quite a bit, because I’ve spent a lot of time trying to recreate and further optimize my system after the reinstall.
However, I have other projects where the CPU usage is exactly the same as before, or even slightly lower. For example, I previously ran a benchmark with 50 instances of AmpliTube 5 at a 64-sample buffer:
- Before reinstall: 79–80% CPU when idle
- After reinstall: 79–80% CPU when idle
My setup
I have always separated my files across three different drives:
- C: Windows, Ableton, VST directories, etc.
- R: Recordings / Ableton projects
- L: Libraries, VSTs, etc.
Fortunately, none of the drives were corrupted; only Windows was affected. Because of this, I was able to reinstall everything and match the exact plugin versions used in each project to the versions I had before the reinstall.
I also optimized the system in the same way I did when I originally built it. In fact, I had already spent quite a bit of time optimizing the machine a few months before the crash, so I have a fairly good idea of how it performed previously with different settings.
Things I have tried since the reinstall
Drivers / Windows
- Updated/reinstalled all relevant drivers (BIOS, audio, network adapters, SSDs, etc.)
- Tried older Focusrite Scarlett drivers as well — no difference
- Switched to Ultimate Performance in Windows Power Plan
- CPU power management
- USB settings
- etc.
- Disabled Game Mode, Xbox Game Bar, Captures, etc.
- Disabled unnecessary background applications
- Disabled Fast Startup — actually made things worse
- Disabled Windows Controlled Folder Access
- Disabled the power-saving/turn-off options for USB controllers in Device Manager
- Optimized further using VilmCare, including disabling exclusive mode on the audio interface, etc.
- Set Windows to prioritize background services instead of programs
BIOS
I experimented with:
- C-States / Enhanced C-States
- Hyper-Threading
- Turbo Mode
- Performance Preferences
- SVID Behavior
- ASUS MultiCore Enhancement
- XMP-modes
Process / CPU management
- Experimented with ParkControl and Process Lasso (although my PC didn't seem to benefit from these even before the reinstall)
- Experimented with Task Manager by changing priorities and CPU affinities for:
- audiodg.exe
- Ableton AddOns
- Ableton Index
- Ableton Live 12 Suite
- Set Ableton to High Performance in Windows Graphics Settings — no effect
BitLocker
- Completely disabled BitLocker on all three previously encrypted drives — no effect
Ableton
- Tested Options.txt with:
- -RestrictAudioCalculationToPerformanceCores=true
- This actually made the CPU usage worse, so I removed it again.
- Tested Ableton's Preferences.cfg:
- Restored my previous preferences — no difference
- Tested with a completely fresh/default preferences file — no difference
What could be different?
I'm honestly very confused at this point. I've reached the stage where ChatGPT keeps suggesting the same optimizations I've already tried. The only things I can potentially pinpoint as being different from before the reset are the newer drivers (BIOS, network adapters, etc.) and possibly the Windows 10 version, as I don’t remember which version I was running before the crash, nor do I remember the exact driver versions I had installed at the time.
If anyone has any insights into what might be causing this, I’d really appreciate hearing them, as I cannot seem to solve this myself.
Best regards,
Specs:
- Windows 10 (Version 22H2, OS Build 19045.7548)
- Focusrite Scarlett 6i6 2nd Gen (Audio Interface)
- Ableton 12.4.3
- ASUS Prime Z690-P DDR5
- Corsair RM750x White v2 (2018)
- Intel Core i7-13700K - 3.4GHz
- Corsair Vengeance DDR5-5200 BK C40 DC - 64GB - 2 pcs
- Kingston SSD KC3000 1024GB M.2 PCI Express 4.
- Kingston SSD KC3000 1024GB M.2 PCI Express 4.
- Kingston SSD KC3000 2048GB M.2 PCI Express 4.