Tweaks boost your device's performance and significantly reduce lag during gameplay. In short, you'll definitely feel a huge difference, like night and day, even in your gameplay. Windows + BIOS tweak: 150 SAR Windows tweak only: 50 SAR BIOS tweak only: 20 SAR Tweaks on the same Windows: 30 SAR If you don't feel a difference, you get your money back, and I'll do a stronger tweak for free.