When running games in OpenGl, like Counterstrike and Quake3, you might have problems with a laggy mouse (+ keyboard). This lag CAN be related to DirectSound a part of DirectX; the solution was found by "Cabrone":
1. Go to DirectXDiagnostics; Start -> Run -> dxdiag.exe
2. Just go to the sound part of directx and disable sound acceleration
This tweak clears up the laggy mouse issues in OpenGl games under XP
Laggy mouse in OpenGL
Posted in Windows XP by Community Submission