Sorry for reviving this. However, I’m wondering what the optimal setting would be in Reason 10 since I have discovered that on my Mac OS X (Sierra) unit, it coughs and sputters with V3.1.1 and more often than not gives a ” Computer Too Slow” message. The system I am using it on is powerful enough (with the audio and sample libraries on separate drives in an external RAID unit) and I never have any Audio Unit issues with Logic.
I do find that if I run the SD3 in Reason without opening up the plug-in window, it will play smoother.