@Zwetsbal: Can you check how it performs now?
See this thread:
viewtopic.php?f=14&t=3835&start=126

Hey Zwetsbal (great name )

The multicore support in Stereo Tool is currently very limited. I have made some preparations in version 6.20, and I want to add much better support for it soon.

For now, the only thing you can do is try to reduce the CPU load by changing some settings, such as:

- Turn the declipper off! It takes a lot of CPU power.
- In Loudness, lower the 'strictness' slider. This has a big impact on the CPU usage - just don't set it too low.
- In Stereo Boost, turn 'Remove excessive reverb' off - this allows the Stereo Boost and Multiband filters to be combined.
- In the main window, lower the Quality slider.

If that still does not suffice, you'll need to start turning filters off.


Things will get much better when I have time to add decent multicore support. Currently only the FM composite limiter ("FM Volume Overdrive") is processed on another core. (And the GUI of course).

Lowering the strictness setting from -4 to -8, allowed me to run Stereotool with my favorite preset on an ancient Sempron 2800+ Socket A machine. I think It sounds a little "airy" compared to the original setting.

May I ask the noob question of what does strictness exactly do?

Hans has a new ST6.32 limiter/loudness help page, including Strictness description, here:

http://help.stereotool.com/6.32/limitin ... ness.shtml