For the PC release, Dementium II HD, start with the game’s main-menu Options: adjust its video settings and remap controls to suit your setup. It supports both keyboard and mouse and controllers, but the available sources do not establish a guaranteed FPS fix or show that one input method performs better. Check your PC against the published requirements, then treat any further compatibility or display changes as experiments rather than proven optimizations.
Start with the documented in-game options
From the main menu, open Options to customize controls and adjust video settings, as described in the PC Quick Start Guide. The guide specifies a maximum selectable resolution of 1920×1080. It does not detail individual graphics-quality settings or say how changing a setting affects frame rate.
Try the available video options one at a time and note whether the game feels or looks better on your PC. The published sources provide no benchmark results, target frame rate, or verified performance tweak, so a change should not be treated as a universal fix.
Compare your PC with the published requirements
Steam lists the following requirements for Dementium II HD. They are the store’s published specifications, not a performance guarantee for a particular modern PC, resolution, or frame rate.
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| Component | Minimum | Recommended |
|---|---|---|
| Operating system | Windows XP, Vista, or 7 | Windows 7 SP-1 64-bit |
| Processor | Core 2 Duo E6750 or Athlon II X2 245e | Core i3-2500 or Athlon II X4 650 |
| Memory | 2 GB RAM | 4 GB RAM |
| Graphics | GeForce 8800GT or Radeon HD 5700 | GeForce GTX 285 or Radeon HD 5830 |
| DirectX | Version 9.0c | Not stated separately; Steam lists DirectX 9.0c |
| Storage | 4 GB available space | 4 GB available space |
Steam’s page also notes that the Steam client supports Windows 10 and later starting January 1, 2024. That is a client-support notice; it does not replace or update the game’s separately displayed Windows requirements.
Choose and customize your control method
The PC Quick Start Guide lists defaults for keyboard and mouse as well as controller, and Steam identifies controller support. Use Options to change bindings if the default layout is uncomfortable. The listed controls are defaults from the guide; they do not guarantee that every third-party controller will work.
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| Action | Controller default | Keyboard and mouse default |
|---|---|---|
| Move | Left analog stick | WASD |
| Look | Right analog stick | Move mouse |
| Attack or fire | Right trigger | Left mouse button |
| Interact or examine | A button | Right mouse button |
| Run | Hold left bumper | Hold Left Shift |
| Jump | Left trigger | Space |
| Crouch | Press left stick | C |
| Reload | Right bumper | R |
| Flashlight | X button | F |
| Inventory | Back button | Tab |
| Pause | Start button | Escape |
| Weapon selection | D-pad quick selections; Y next; B previous | Number keys 0–9 or mouse wheel |
| Zoom | Not listed in controller defaults | Z |
How to decide between them
- Keyboard and mouse: a natural choice if mouse aiming and familiar keyboard bindings feel comfortable to you.
- Controller: use it if you prefer analog movement or already have compatible hardware.
- Remapping: change bindings around comfort and available hardware; the guide does not establish that either method is faster or more accurate.
What to try if performance is still poor
The cited materials document in-game video options and system requirements, but not tested driver, compatibility-mode, or display-mode fixes. If you explore those settings outside the game, change one at a time and check whether the result improves; consider each a troubleshooting experiment, not a verified solution. No published benchmark in the cited sources can predict the outcome on your particular PC.
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