VRR BFI LFC driver hack idea
Posted: 18 Jun 2025, 12:22
Hi everyone.
Has anyone implemented or thought of using driver side LFC to enable VRR BFI on high refresh rate monitors?
I know that some OLED monitor have BFI modes, but they typically disable VRR as far as I'm aware
Example:
480 Hz VRR OLED monitor
Frame rate 100-200 Hz
LFC 2x forced on, every second LFC frame replaced by black (effective refresh rate 200-400 Hz)
Disadvantages:
Brightened halved
HDR EOTF undertracking
Recommended hardware would be
100 fps+ source (flicker fusion)
400 hz+ display (would still make it possible to use LFC while using LFC 2x for BFI)
250 nits full screen brightness display
Has anyone implemented or thought of using driver side LFC to enable VRR BFI on high refresh rate monitors?
I know that some OLED monitor have BFI modes, but they typically disable VRR as far as I'm aware
Example:
480 Hz VRR OLED monitor
Frame rate 100-200 Hz
LFC 2x forced on, every second LFC frame replaced by black (effective refresh rate 200-400 Hz)
Disadvantages:
Brightened halved
HDR EOTF undertracking
Recommended hardware would be
100 fps+ source (flicker fusion)
400 hz+ display (would still make it possible to use LFC while using LFC 2x for BFI)
250 nits full screen brightness display