Input lag AB test

Arbybear
Fri, 08 Jun 2018 00:26:07 +0000

Have you ever wondered how little of a difference of input lag you can perceive? With this tool, you can find out.

The screen is split into two halves, and one of them has an artificial amount of input lag (default 50 ms, you can change it) added to the mouse cursor. Figure out which side feels laggier and click on it. After 25 trials, it will show your results. If you can consistently score at least 18/25 correct at a certain amount of lag, then you can probably perceive it. I can go as low as 20-25 ms on my 144 hz monitor.

Be sure to edit one of the files as shown here to disable v-sync, or if you trust me you can download my copy.

Comments URL: https://tildes.net/~misc/1wp/input_lag_ab_test

Votes: 7

Comments: 3