Cubase Pro WIndows Audio Performance question

Cubase Pro allows more audio and midi channels, more VSTis, more Insert and Send slots, than Cubase Artist and lesser versions.

My PC is quite a pro spec: i7 7700K 4.2 Ghz, 64Gb RAM, Radeon RX Vega 64 graphics, separate SSDs for OS and media. RME audio card with low latency.

Yet, before my projects approach the limits of even Cubase Artist numbers of channels/instruments/inserts, audio performance grinds to a halt.

My buffer is set at 4096. no other applications are running. multi-processing is enabled. Task Manager shows CPU at 40% load. Memory 24%.

But Cubase’s audio performance meter is permanently in the red, and playback stutters.

I have frozen every instrument and audio track.

I’m using industry standard plugins: Waves, Sonnox, Soundtoys, Spectrasonics.

What is going on?

Any suggestions?

I could get a new PC, with a 20% faster CPU. but given that Cubase is only using 40% of the current CPU, would that help?

Could the Cubase application give us more information about where the bottleneck is?

What number is the “audio performance” meter using?

Could it gives us a breakdown by channel?

Why isn’t there an option to freeze a group channel?

You should be all set there. Have you done what this article suggests?

Optimizing Your Computer for Audio - Windows 10 – Knowledge Base | PreSonus

Pay attention to the USB connection as it describes in the article, make sure they do not turn off with inactivity. Also, with the Radeon graphics card (or any video card), install ONLY THE VIDEO DRIVER, not the AMD fluff, and yes, the installer DOES give you the option to avoid the fluff. Then in Device Manager you will see that the video card also installs some audio drivers? Disable them, along with the MB audio drivers (Realtek, etc.). All you want is you interface device to operate for sound. Also skip the install of iTunes, it’s a hog of a different type.

You’ll get it sorted. All the Best.

mr.roos, thank you for linking that great article and for your positive vibes!

I will apply some of the suggested measures and report back.