Briefly, ProBalance is supposed to modify CPU scheduling briefly during high loads in a way similar to Linux and MacOS, penalizing CPU bound processes while rewarding I/O bound processes. They therefore recommend using their ProBalance option instead of increasing CPU priority for the desired application. In most cases other processes will not be using a significant amount of the CPU’s time anyway, and allowing them to execute when they want to will not slow the busy process by any notable amount." Some testing by volunteers is needed, because it still isn't clear to me if we need to be setting a high CPU priority or high I/O priority for Pro Tools.īitsum say: "It may seem paradox but it is in fact more sensible to reduce the priority of the busy process so that the system is prepared to let other processes have some time thus allowing them to remain functional. With Process Lasso there is no script needed, and you don't have to touch it ever again after initial setup. Using Process Lasso, this setting can be automatically applied every time a process is run. I can literally have 100+ tracks in playback with lots of plugins and be doing overdubs on tracks at 128. Process Lasso v12.3 adds support for per-process Efficiency mode, a native Windows 11 feature to designate processes as not performance critical. You have problems with settings whether it be bios and or OS that are causing your issues. You should be able to playback / record tons of tracks at a 64 hw buffer w a 9900k without any script like this. However it begs the questions, why is it necessary? Any ideas of other ways to trouble shoot or some indication from Avid that a fix is in the works? Seems to me to be unacceptable behavior for a pro software of this caliber.ĮDIT: Increasing the buffer to 1024 seems to more or less get rid of the CPU spikes, but running the script still seemed to offer a minute improvement based on an unscientific test. I can confirm that using Processor Lasso or a script that launches Pro Tools with one core disabled in the processor affinity settings doesn't work, the settings must be applied either with the script manually in task manager. Many thanks for this script, it's a big help. Playback with two audio tracks is barely possible at a 64 or 128 buffer until the fix is applied, after which point it plays back smoothly. Optimizing Windows based on Pro Tools guide doesn't help. My interface is an RME Babyface Pro with the latest drivers installed. This solution worked for me on my i9 9900K build on Windows and Pro Tools 2019.12.
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