ok, tomorrow I'll check the uploaded versions. Check in MAST page that you are running Core3, otherwise just wait.
If you are running it and you don't see performance increases:
MEMORY - you should try loading the SAME preset across different nebula instances. Possibly something with a lot of data, for example "doc fear hi", which is based on around 200 megabytes of data. You should save around 200 megabytes for each instance
PROCESSOR - well, I'm not intel, but I see their new optimization works very well on NEW processors, because all new processors were added to the list. In particular i7, ESPECIALLY the NEW ones (for example my notebook is using a different i7 than my desktop). In order to test it, select a reverb, possibly VNXT reverb, which is around 5 seconds. Here you are testing more or less the new intel library ALONE. In other configurations you could be fooled because you could run the OTHER code (not intel), which was already optimized!!! we can't go further there! Just to give a rough idea, my desktop 3.2 GHz i7 is running the 5 second VNXT reverb @ 44100 using ONLY 1% of processor (displayed in nebula 8%, but they are 8 cores)
 I see you are running an old version. Ok tomorrow I'll check it. If you don't read "Core3" just wait. You are running the old engine....