Thanks found this video analysis of his for Overwatch with RealTek onboard audio in-game audio delay Looks like a very common audio delay (from input activation to mesurable audio output) is c. 180-210 ms in many FPS 3D games with his setup, whether VSS is active OR not. That is huge. It would be interesting to find out, if this can be lowered at all with different sound cards. Clearly the in-game settings AND the soundpath (DirectSound) both appear to set a lower limit for the delay, below which it is probably impossible to get. But even getting this down to 60ms would be a great feat.