StephanKim

This issue has been resolved with the latest Sonar update. A big thanks to Noel for addressing it so effectively!

I have found a reason for this issue. I will post about it through a new topic

I’m attaching screenshots from tests I conducted on the new system. All tests were performed with the same project. I tested with the latest versions of both CbB and Sonar, and the results are even more extreme compared to the screenshots I shared earlier. It seems like one of the CPU cores/threads is completely unused. Interestingly, Sonar appears to utilize some of the second CPU’s cores more than CbB does.(Sorry No screenshots saved in this time) However, there was no difference in NUMA settings, and there weren’t any significant differences in the MMCSS configuration either. I also discovered that my workstation system has a feature allowing me to view and adjust how processes set processor affinity. Upon checking, both CbB and Sonar showed similar behavior, with only partial utilization of one of the two CPUs. I even tried forcing the process to use all cores, but this didn’t result in any significant changes. Given that this behavior has been noticed recently (due to the perceived performance drop), I can’t help but wonder if it’s related to the latest updates to Windows 10 (on my previous system) or Windows 11 (on my current system). I’m not a software engineer, so I don’t fully understand what might be causing this, but I hope someone with technical expertise can look into the issue. It’s a bit confusing—if the software only uses one CPU, what’s the point of investing in an expensive multi-core system?

I’ve been using Sonar and Cakewalk for over 20 years. This issue has only started happening recently, and it doesn’t seem to be related to any specific plugin but rather a change in the performance settings of the program itself. The reason I say this is because I’m currently testing on a new workstation with a freshly installed Win11 OS(10, before), and CbB is still only utilizing one of the two CPUs. It seems that in a recent version update, the behavior of the Multiprocessing Engine was changed—previously, it utilized all CPUs and cores, but now it appears to only use the cores of one CPU. If a developer sees this post, I’d appreciate it if they could look into this.

Hi everyone, I'm using a multi-CPU system. Recently, while working on some mixing projects, I noticed that the system load felt higher than usual. You all probably know the kind of issues that come up in these situations, like the audio engine stopping or sound cutting out intermittently. So, I opened Task Manager and found that only one of the two CPUs was being loaded. I'm attaching some screenshots—one with the Plug-in Load Balance feature turned on and the other with it turned off. Previously, the system would utilize all CPU cores, but something seems off now. And another thing, I noticed is that when the Plug-in Load Balance is enabled, the load is distributed more evenly, but instead of feeling more stable, it seems like the overall load is actually increasing. What's the problem here? I've noticed this before, which is why I often end up turning off the Plug-in Load Balance feature while using the program.

Same issue here, I had left details of issue to tech team years ago...

Also hope enhancement for "External Insert" plugin. It has some bugs.

Amazing update!! I have suggested this "Arranger Track" feature for upcoming updates when Cakewalk was started new journey with BandLab. Looks fantastic than I expected! I'm very happy :):) Thx guys!