Microsoft KB Archive/285213

= Combat Flight Simulator 2: Sound or Frame Rate Issues =

Article ID: 285213

Article Last Modified on 6/14/2005

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APPLIES TO


 * Microsoft Combat Flight Simulator 2: WWII Pacific Theater

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This article was previously published under Q285213



SYMPTOMS
When you play Microsoft Combat Flight Simulator 2, you may experience one or more of the following symptoms:
 * Stuttering sounds.
 * Chirping or clicking sounds.
 * Distorted sounds.
 * The video frame rate drops when you fire your guns.
 * The video frame rate is slow or choppy.



CAUSE
This behavior can occur if your sound card is not compatible with the process that converts the game sounds to mono sound.



RESOLUTION
To work around this issue, use the following methods in the order in which they are presented.

Increase the Sound Playback Quality
To increase the sound playback quality:  Click Start, point to Find, and then click Files or Folders. In the Named box, type the following line:

cfs2.cfg

 In the Look in box, click My Computer, and then click Find Now. Double-click the Cfs2.cfg file. In the Choose the program you want to use box, click Notepad. Click to clear the Always use this program to open this file check box, and then click OK.</li>  Scroll to the [SOUND] section and change the BitsPerSample=, the Channels=, and the SamplesPerSec= lines to match the following code: [SOUND] Channels=2 SamplesPerSec=22050 BitsPerSample=16 NOTE: You can use either one of the following values for the SamplesPerSec= line: <ul> 22050</li> 44100</li></ul>

</li> On the File menu, click Exit. When you are prompted to save the changes, click Yes.</li> Restart Combat Flight Simulator 2.</li> If the problem continues to occur, attempt to use different combinations of the values presented in step 7 and the default values in the [SOUND] section of the Cfs2.cfg file.</li></ol>

NOTE: The following code contains the default values in the Cfs2.cfg file: [SOUND] Channels=1 SamplesPerSec=11025 BitsPerSample=8 If this issue continues to occur, proceed to the next method.

Delete the Sound Entries in the Cfs2.cfg File
To delete the sound entries in the Cfs2.cfg file: <ol> Open the Cfs2.cfg file.</li>  Delete the following lines from the Cfs2.cfg file: [SOUND] Channels=1 SamplesPerSec=22050 BitsPerSample=8 </li> On the File menu, click Exit. When you are prompted to save the changes, click Yes.</li> Restart Combat Flight Simulator 2.</li></ol>

Change to Game Compatible Device

 * 1) Click Start, point to Settings, and then click Control Panel.
 * 2) Double-click Multimedia.
 * 3) Under Playback, click Game Compatible Device in the Preferred Device box.
 * 4) Click to select the Use Preferred Devices Only check box, and then click OK.
 * 5) Close Control Panel, and then restart the computer.

For additional information about sound issues, click the following article number to view the article in the Microsoft Knowledge Base:

812394 Games: How to Troubleshoot Sound Related Issues

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MORE INFORMATION
To increase compatibility with game controllers, the sound settings in Combat Flight Simulator 2 use 11Khz, 8-bit, and mono sound as the default values for the sound settings.

These default values were chosen because many sound cards are unable to fully process game controller signals and high quality game sounds at the same time.

Additional query words: msgame combatfs cfs2 audio

Keywords: kbprb kbsound kbdisplay KB285213

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