It did sound fake. But Maya was desperate. She opened the game’s launcher properties, added -DisableHIDdenLag as a launch parameter, and held her breath.
Scroll down and expand the category. Locate HID-compliant consumer control device entries. Right-click each one and select Disable device .
Uncheck all boxes except for (limiting it to 4 cores).
When the game locks, go to Task Manager , set the affinity to only CPU 0 , perform the action, and then turn all cores back on after the scene finishes. Summary Checklist Fix Method Target Issue Effectiveness Set Affinity Stuttering, Low FPS Disable HID FPS Drops, Crash Medium/High Community Patch Startup Crashes Cap at 60 FPS Screen Tearing, Stutter prototype 2 lag fix work
You can force Steam to launch with limited cores, which will inherit the setting to the game. Create a new text file and paste:
Forcing the game to run on fewer cores prevents crashes and stabilizes performance. Manual Method: Launch the game, Alt-Tab to Task Manager , right-click prototype2.exe under "Details," select Set Affinity , and uncheck all but CPU 0, 1, 2, and 3 Permanent Method: batch file (.bat) to launch Steam with limited cores (e.g., cmd /c start "" /affinity F "C:\Path\to\Steam.exe" 3. Community Mods (All-in-One Fixes) Prototype2Fix mod by Emuse Nexus Mods automates several of these fixes: Prevents crashes from high core counts. Patches HID-related frame drops without manual disabling. Corrects VRAM calculation errors.
Do not disable your actual mouse or keyboard. If a device stops working, simply re-enable it. Limit Processor Affinity It did sound fake
Ensure the game has proper permissions to read/write files.
Fixes the native cap of 1080p for 4K or Ultrawide monitors.
Prototype 2 , despite being an exhilarating open-world action game, is notorious for its disastrous PC port. Even years after its release, players attempting to run this masterpiece on modern hardware (Windows 10/11, high-core-count CPUs) often encounter severe lag, low FPS, crashing on launch, and stuttering. Scroll down and expand the category
Prototype 2 has a fatal flaw where it scans for Human Interface Devices (gamepads, mice, special keyboards) every frame, causing severe lag. Right-click the Start button and select . Expand Human Interface Devices .
Does the game after a certain amount of time? Share public link
Launch Steam and open your Task Manager ( Ctrl + Shift + Esc ). Click the tab and locate steam.exe . Right-click steam.exe and select Set Affinity .
The primary engine bottleneck in Prototype 2 is its repetitive polling of USB devices. The engine gets stuck in an infinite loop checking your modern gaming mouse, keyboard, or headset, dropping game performance down to an unplayable 10–15 FPS. Follow these steps to safely bypass this issue: Press Win + X and select .