Dungeon Siege 2 Mouse Fix (2025-2026)

The problem stems from a conflict between the game’s original DirectInput API (used for mice in the early 2000s) and the way modern versions of Windows handle raw mouse input, especially at high polling rates. Modern gaming mice default to 500Hz or 1000Hz polling (reporting position 500-1000 times per second). Dungeon Siege 2 , released in 2005, expects a more leisurely 125Hz. When it receives a flood of data it can’t properly queue, the engine stutters, and the cursor lags.

If Method 1 didn’t work (or you are using the original disk version), the issue is likely your mouse’s 1000 Hz polling rate. You need to reduce it to 125 Hz. dungeon siege 2 mouse fix

Some players find success by capping frame rates. The mouse lag often worsens at extremely high framerates. Use your GPU control panel (NVIDIA Control Panel or AMD Adrenalin) to force a global or game-specific cap of 60 FPS. The problem stems from a conflict between the

Some users apply the mouse fix only to find that the cursor disappears entirely in the main menu. This is a rendering layer conflict. When it receives a flood of data it