Bub
This is a HUGE benefit ...
"Managing large plug-in sets and multiple virtual instruments on typical studio computer systems can often be difficult because of CPU performance limits. VST3 helps to improve overall performance by applying processing to plug-ins only when audio signals are present on their respective inputs. Instead of always processing input signals, VST3 plug-ins can apply their processing economically and only when it is needed."
I quoted the same passage in another tread about vst3 quite a while ago. I was told by Noel that this has already been implemented in sonar since the beginning of time even with dxi and vst3 offers nothing new in these regards.
Maybe it's my misunderstanding, but it sounds like the passage is saying vst3 only uses CPU when a clip is present. To me that is a huge benefit. The way sonar has always appeared to work for me is once a plugin is placed in the effects bin or clip bin it continuously utilizes CPU whether a clip is present or not.
Even before vst3 this is a feature I've often wrote about on these forums that would be great in sonar. For instance, in SAWstudio you can automate plugin bypass to turn off CPU processing for the plugin.
So for instsnce you have a very short clip you want delay on, the plugin doesn't need to utilize cpu the whole song.