If I start a melda production plugin within Studio One it peaks my CPU, which shouldnt be possible because I have a really fast CPU:
Intel Xeon E5-1650 / 3.2 GHz (3.8 GHz) (6-Core)
Cache-Speicher 12 MB L3
RAM 16 GB
1 x SSD 512 GB - SATA-600

After the Start up peak, it uses a huge range of CPu from 8%-100%, which makes it unimpossible to use melda production plugins.
I use the 64 Bit VST Versions with the Host Studio One 2.6 64 Bit.
I have many Plugins which are working, except melda production and image line plugins. Both have the same errors of high range of CPU usage and sudden CPU peaks.
The problem is, you can hear these peaks in bouncing the project, thats why I dont use melda production plugins anymore.
Here are some sudden peaks:


(It was much work to hit the screenshot button in the right moment....)
