Find the current limit
The display's own menu and the driver both report the active mode. Note the resolution and refresh rate you run today so you can return to it in one step.
Display settings > Advanced display
Panels often run faster than the box says. Pushing 60 to 75 is usually free; pushing past the panel's limit gives you skipped frames you cannot see in the frame counter.
Add a **custom resolution** in the driver, raise the refresh rate in **small steps**, and verify with a **frame-skipping test**. Revert at the first sign of artifacts.
The display's own menu and the driver both report the active mode. Note the resolution and refresh rate you run today so you can return to it in one step.
Display settings > Advanced display
Raise the refresh rate by five hertz at a time and test each step. A jump of twenty makes it impossible to say which value the panel tolerated.
NVIDIA Control Panel > Change resolution > Customize
A panel that cannot keep up often still accepts the mode and drops every second frame. The test shows the skips; a simple frame counter does not.
testufo.com > Frame skipping
Sparkles, a flickering band or a brief black flash on alt-tab mean the panel is past its limit. Lower the rate by five and confirm the artifact is gone before you keep it.
At 1440p and 10-bit colour the cable and the port run out of bandwidth before the panel does. Dropping to 8-bit or a lower chroma mode often buys ten more hertz.
Keep the custom mode as a driver profile and check one game with a frame limiter. If the game stutters at the new rate but not at the old one, the mode is not stable.
Wait fifteen seconds; the driver reverts on its own. If it does not, boot into safe mode and delete the custom mode.
Skipped frames. Drop five hertz and re-test with the skipping check.
The bandwidth forced a lower chroma mode. Reduce the colour depth or the resolution.
The custom mode is not applied at resume. Reapply the profile or use a tool that restores it.
Rarely, and mostly through heat over years. Unstable modes are the realistic risk, not destruction.
Visibly smoother and usually free. Past the panel's real limit you get artifacts instead of motion.
Delete the custom mode in the driver's resolution panel and reboot. The display returns to its standard timing.
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