MIR processes only its own channels, of course using the CPU. If MIR working in Standalone mode, MIR not use resources of Host or VE PRO, only CPU. In my monstrous project with 900 tracks :) I use only 19 channels in MIR for process. (pic. http://i.minus.com/inDUeFtPQDuTq.JPG )
Its toy template is compared in this example: http://community.vsl.co.at/forums/p/34599/215686.aspx :) And despite this my MIR template kills my CPU.. Reason is one - in my case MIR work does not in VE Instance and in Standalone mode.
900 tracks (midi) do not have anything to do with :)
I have a fast disсs - OCZ Revodrive X2 and X3, almost all library located on these discs. Also I have a raid-massives on ordinary discs 7200. Speed of my library discs can be found here: http://www.youtube.com/watch?v=S-nFBWTlnew (my drives right :)) And if you know -
work with libraries of Hollywood series (eastwest) can only use these discs (or SSD-raid) and VE PRO. It is a prerequisite. :)
The problem is not speed drives or weak system or huge project, and even not loading the audio engine (ASIO).. Problem in MIR in Standalone mode, and this problem can be solved by transferring MIR to another computer.
This movie is a little bit about my problem: http://www.youtube.com/watch?v=h0DAXKB0JMI