A question about Freesync flicker workaround
Posted: 16 Feb 2023, 07:22
So basically, I'm experiencing an (apparently common) issue that causes the screen to flicker under certain conditions when enabling Freesync on a monitor with a VA panel. It would usually manifest itself in game menus and during loading screens, but also during gameplay whenever there is a spike in frametime while the FPS is hovering around 60-65. Such jumps in frametime are so tiny that you could only see them on a frametime graph, but they would still cause Low Framerate Compensation to kick in and the screen to flicker.
Following this guide https://www.displayninja.com/what-is-fr ... lickering/ as well as a few other posts online, I tried decreasing Freesync range using CRU, but the usual values they recommend for Nvidia users (going from 48-144Hz to 80/90-144Hz) didn't fix it for me. Only when I changed it to 100-155Hz (since I'm using a 155Hz monitor) did the flicker stop completely.
So my question is: what's the downside of running it like this? The way I understand, below 77 FPS (half the refresh rate), LFC would kick in effectively "doubling" the frame rate into the 100-155Hz VRR range thus eliminating screen tearing. Also, between 100 and 155 FPS, Freesync would function normally. So the only issue is that between 77 and 100 FPS, there'd be no variable refresh rate. Am I correct?
Following this guide https://www.displayninja.com/what-is-fr ... lickering/ as well as a few other posts online, I tried decreasing Freesync range using CRU, but the usual values they recommend for Nvidia users (going from 48-144Hz to 80/90-144Hz) didn't fix it for me. Only when I changed it to 100-155Hz (since I'm using a 155Hz monitor) did the flicker stop completely.
So my question is: what's the downside of running it like this? The way I understand, below 77 FPS (half the refresh rate), LFC would kick in effectively "doubling" the frame rate into the 100-155Hz VRR range thus eliminating screen tearing. Also, between 100 and 155 FPS, Freesync would function normally. So the only issue is that between 77 and 100 FPS, there'd be no variable refresh rate. Am I correct?