Retrieving the COM Class factory in IIS 7

I have an 32-bit COM+ Application. One instance taking about 200MB~ in memory. I'm using this COM-object in my ASP.NET MVC 4 Web-Application. Web-Application is 32-bit too.

It's works good enough at Debugging and at IIS 7. Problems starts when I need to create 5 and more COM instances simultaneously: it's works fine at Debugging (with IIS express. I tried about 100 instances and it worked fine too), but crashes after publish at IIS 7.

IIS 7 configs:

1. "Enable 32-Bit Applications": true
2. "Identity": LocalSystem
3. "Pipeline mode": I tried classic and integrated

Web-app identity: use app pool identity (LocalSystem).

Authorization: Anonymous - use app pool indetity (LocalSystem)

In Web-App log: Retrieving the COM class factory for component with CLSID {AppID} failed due to the following error: 80080005. HRESULT: 0x80080005 (CO_E_SERVER_EXEC_FAILURE).

Looks like it not due the access reasons. It possible to create COM-object at IIS 7, but not possible to create a lot of them simultaneously.

In COM-application log I see this: Out of system resource. So, looks like the reason is memory can't be allocated at heap. But it can be allocated when works in IIS Express.

I thought that COM+ Application is always out-of-process, like this:

But could it be inprocess like this, while hosting at IIS7?

Is it possible to fix this issue?

My OS: Windows 7 x64.