BPMThe test is flawed as it uses to browser to dertemine the hz. It's meant as a rough estimate not as an accurate tool. The stutter and lag are not caused by the display but because of how the games have bad frametimes on smartphones in general.
Thanks for that. I'm not sure how accurate it is, but this is the average results I've gotten from trying it:
60 Hz = ~59.7 Hz
90 Hz = ~89.8 Hz
120 Hz = ~119.3 Hz
144 Hz = ~144.1 Hz
Tests were run using the Brave browser. It's interesting that, based on this tool, every setting was below the intended refresh rate, except for 144 Hz which averaged above the intended refresh.
@Danishblunt Tagging you into this, since you have a pretty good grasp on technical stuff. Is this tester accurate? Is this just the nature of OLED screens, or does it have something to do with how the screen is calibrated? Does it occur on your custom kernel?