Quote:
Originally Posted by s.d. finley
I too am having crazy CPU spikes. MacPro 5.1 dual Hex core, so 24 cores, 64 GBs of RAM, El Capitan and SSD for the boot drive PTHD 2018 with HDN PCIe card. Recording drive is practically empty. Its nuts. stereo track playing back while recording a single track, zero plug ins and spikes that gives me errors that stop playback with a buffer of 128. I should be able to get a lower buffer but if I change it I get cpu spikes and buffer errors. Should I upgrade the Mac OS?
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I have the same machine 5,1 12 core, with the same 64 Gig of Ram, also HDN PCIe, and ..can report... I have exactly the same issue with versions 12.8.3–2018.4
The same machine running Yosemite 12.8.1, runs perfectly to maximum 128 tracks at 24/96 with 128 buffer no spikes.