VRR & Screen Tearing Test
Simulate GPU frame rate fluctuations and test G-Sync, FreeSync, and V-Sync motion pacing against horizontal screen tearing.
Dynamic timing locks the panel refresh rate to the GPU's fluctuating output, delivering fluid motion without torn frames.
When frame rates fluctuate out of sync with fixed refresh cycles, horizontal split lines (tearing) appear across the moving bar.
Frequently Asked Questions
What is Variable Refresh Rate (VRR), G-Sync, and FreeSync? ↓
Variable Refresh Rate (VRR) synchronizes your monitor's refresh rate dynamically with your graphics card's render output frame rate. G-Sync (Nvidia) and FreeSync (AMD) eliminate horizontal screen tearing and stuttering without the input lag of V-Sync.
How do I check if G-Sync or FreeSync is enabled on my monitor? ↓
Open Nvidia Control Panel (Display -> Set up G-SYNC) or AMD Software Adrenalin (Gaming -> Display -> AMD FreeSync). Ensure VRR is set to 'Enable for windowed and full screen mode'. You can test frame pacing using our interactive VRR visualizer below.
Why does screen tearing happen? ↓
Screen tearing occurs when your GPU sends a new frame in the middle of your monitor's display refresh cycle. The top half of the screen displays frame A while the bottom half displays frame B, creating a noticeable horizontal tear line.
Does G-Sync cause input lag? ↓
No. Unlike traditional V-Sync which buffers frames and adds 16-50 ms of input lag, G-Sync and FreeSync dynamically adjust the monitor's timing on-the-fly, adding zero perceptible latency.
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