Evoke low CPU mode

Hi, I’ve noticed Evoke is pretty heavy on CPU compared to other plugins even for the Unison or Choral resynth. It would be great to optimize the CPU usage or provide a way to disable some of the features (e.g. retune, display, etc.) to free up some of the load.

Right now, I have to disable it to let the project play and only use it on offline events or during rendering.