More processing power when using Bit Bridge?

Dear Sonar family,
 
First of, I love my Sonar Professional and working with it.
 
My system is
Windows 10 64 Bit Workstation Notebook
All Audio settings optimized (Energy Management etc)
Intel i7 4800 MQ 2,7 Ghz (4 Physical Cores, 4 virtual Cores)
16 GB Ram
RME Babyface in below case at 2048 Buffer size (!)
 
I'm a big fan of Acustica Audio Acqua Plugins. For those that don't know: They eat CPU for breakfast.
 
I loaded up my usual template and when and inserted 6 Acqua Plugins in total on my Subgroups and Master Busses with the 64 Bit VST version. Immediately when I hit play the Playback Engine drops out, and the far left CPU Meter of my 8 Cores jumps to the Red while the rest stays relatively low. But Windows Task Manager says my CPU load is only about 34%.
Now here is the curious thing: When I install these plugins in their 32 bit version and "offload" the processin, using Sonar's built in Bit Bridge my Sonar CPU meters stay in the yellow and everything is fine.
 
Also when I set up a session in Reaper with the exact same plugins and the exact same routing, using the Acqua plugins in 64 Bit everything is fine.
 
My question would be: Has Sonar trouble offloading plugin processing to  Multiple Cores? Can Sonar split one VST's processing on a multi Core CPU? Does Sonar have problems in working with Virtual Cores?
If everything is supposed to be fine: Why is the Bit Bridge workaround working so fine then?
 
Sorry if this topic got raised before but I just couldn't find anything remotely close to my issue
 
 

Hi Scook and thank you :)
 
That still doesn't explain why I have no issues with Bit Bridge thouh right?

Hi bitman,
Yes I was thinking the same.
One of the reason I'm posting this is to make the devs aware of this issue so maybe in a future  update we can see some better multi thread scheduling when it comes to super heavy processes.
 
I love Sonar but this is one of the fields were Reaper for instance seems ahead. In general Sonar feels stabler to me than Reaper but Reaper handles these mega heavy plugins better in some cases.
 
I'm not a programmer so I don't want to blame everybody for some special issue and I don't know how the Sonar Engine is coded in the background and how it handles Multi threads.
 
If someone from Cakewalk is interested I could send over the session file or is there a way to create a log file so somebody can look into this? Maybe it indeed is my system at the end of the day?
 
In the future I am planning to upgrade my work station but I really do want to see Sonar make use of all available power in my PC first. Seeing drop outs while only having 50% of my CPU in use at max can be frustrating.