CPU Maxing Out with -6101 Error

[cp2]

Hello Forum,

I've researched this all I can and still can't find the solution:

I create a new session with only one instance of Keyscape and Omnisphere, ZERO plug-ins. I very quickly get the 'A CPU overload error occurred... try increasing buffer, etc...'

My buffer is maxed out at 1024. I've tried different cache sizes large to small. 'Ignore Errors' unchecked. Dynamic Plug-in unchecked. I've trashed PT preferences. Video engine disabled. I've closed the session, restarted PT, rebooted the machine. Nothing running in the background. As soon as I start playing pads with Omnisphere the CPU total in my System Usage monitor maxes out and I get the error.

Any help is greatly appreciated, thanks in advance!

Mac Mini 2018, 32GB, Catalina 10.15.7, 6 core Intel i7, Apollo Twin X
Pro Tools 2020.5.0

[Darryl Ramm]

Uh Keyscape and Omnisphere *are* plugins. You mean no additonal plugins.

Has this worked OK before? What changed? What about Keyscape or Omnisphere alone? What about if you create a new test session just try one pluging, create a new test session, try the other.

What sample rate are you operating at?

And when it comes to plugins it does not necesarlly matter if plugins are used at all, a problematic plugin just being installed in Pro Tools can cause CPU problems.

You need to try tackling this following the standard troubleshooting steps under "help us help you" up the top of each DUC web page.

Use Pete Gates free PT Pres tool to trash prefs, and repeat this between other major tests.

Then make sure you try...

In the playback Engine Dialog -
- Leave ignore errors unchecked
- Check Turbo Boost if you have that option
- You might try toggling on or off dynamic CPU processing

Make sure the Mac is fully optimized, do every last thing.

Test with Mini Grand vs Keyscape/Omnisphere, the default/keyboard VI just to get a baseline comparison.

Test with all .aaxplugin files removed, Pro tools will automatically resintall it's core plugins, then try installing just one of Keyscape or Omnisphere, from the latest newly downloaded installers claimed compatible with your setup.

Test using Built-In Output/speakers as playback engine instead of your UAD interface.

Create a new admin account and test from there.

Still stuck describe what you did/exact results.

Can't make progress you may be facing a test Pro Tools and/or macOS upgrade.