[Bug 21994] New: Dual-core not being correctly supported in GTA IV

http://bugs.winehq.org/show_bug.cgi?id=21994

Summary: Dual-core not being correctly supported in GTA IV
           Product: Wine
           Version: 1.1.40
          Platform: x86
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

Created an attachment (id=26717)
 --> (http://bugs.winehq.org/attachment.cgi?id=26717)
Usage of cores

The problem is that multi-threading game such as GTA IV uses only one core on
dual core system. I uploaded cores usage during the play to show the problem.
The game should use all cores that are in system.

Typing  
taskset -p PID_OF_GTA4
in terminal when GTA 4 runs shows:

pid PID_OF_GTA4 current affinity mask: 1

Changing affinity mask to 2 doesn't change usage of second core.

Additional information:
CPU: Intel Core 2 Duo
OS: Fedora 12 32 bit
Wine: 1.1.40+TEXP70 from bug #16328
GTA4: English version patched to 1.0.5.0