DEVICE HELP CENTER

Questions, fixes and practical answers for your setup.

Search common device problems, understand test results and jump straight into the diagnostic tool that can help you verify the issue.

213 curated questions30 diagnostic tools7 topic groups
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Use natural language. The index searches problem wording, benchmarks, comparisons, tool names and troubleshooting terms.

CPS Test Benchmarks

What is a good CPS score?

There is no universal pass score because click speed changes with test duration, mouse switch, technique and fatigue. Compare repeated runs using the same duration; a stable 10-second result is more useful than a single 1-second burst.

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Mouse Tester How to

How do I test if every mouse button works?

Use the focused mouse test area and press left, right, middle and side buttons one at a time. A button should produce a consistent browser event; side buttons can sometimes be reserved for Back or Forward navigation.

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Double Click Test Fix a problem

Why does my mouse double-click when I click once?

Repeated double clicks from deliberate single presses can come from switch bounce, a worn microswitch, very aggressive debounce settings or remapping software. Test several slow single clicks and compare the behavior in another browser or computer.

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Mouse Polling Rate Test Compare

Is 500 Hz or 1000 Hz mouse polling better?

1000 Hz can report pointer updates more frequently than 500 Hz, but the practical benefit depends on the game, display refresh rate, CPU load and input pipeline. A stable 500 Hz can feel better than an unstable higher setting.

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Mouse Accuracy Test Explain it

Does mouse DPI affect accuracy?

DPI changes how far the pointer moves for a given physical movement, so it can affect control and target acquisition. Accuracy comparisons are most meaningful when DPI, operating-system pointer speed, browser zoom and target difficulty stay unchanged.

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Mouse Speed Test Explain it

What does cursor speed in pixels per second mean?

It is the distance the browser pointer travels on screen divided by elapsed time. It is useful for comparing the same device and display settings, but it is not the mouse sensor's physical IPS specification.

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Scroll Speed Test Fix a problem

Why does my mouse wheel scroll too fast or too slow?

Operating-system scroll settings, mouse software, smooth-scrolling extensions and the wheel hardware can all change scroll distance and event cadence. Compare the same browser and settings before assuming the wheel is faulty.

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Typing Speed Test Benchmarks

What is a good typing speed in WPM?

A useful typing score combines speed with accuracy. Around 40 WPM is often considered a practical everyday baseline, while higher scores are useful for writing-heavy work; compare yourself using the same test length and passage difficulty.

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Keyboard Tester How to

How do I check if every keyboard key works?

Start keyboard capture mode and press keys one at a time while watching the virtual layout. Test left and right modifiers separately, toggle Num Lock for the keypad and remember that some system shortcuts never reach a web page.

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Spacebar Clicker Benchmarks

How fast can I press the spacebar?

Use the same timed round for every attempt and compare presses per second. Short tests show burst speed, while longer rounds show rhythm and endurance more clearly.

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Key Press Speed Test Benchmarks

What is a good key presses-per-second score?

There is no universal target because different keys, switches and fingers behave differently. Use the same key and duration for repeatable personal comparisons rather than comparing unrelated setups.

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Reaction Time Test Benchmarks

What is an average human reaction time?

Simple visual reaction times are commonly measured in a few hundred milliseconds, but browser, display and input latency are included in an online result. Compare repeated runs on the same setup instead of treating one number as a biological measurement.

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Aim Trainer Explain it

Does aim training actually improve mouse control?

Consistent target practice can improve repeatable pointing mechanics such as acquisition, stopping and tracking, but in-game performance also depends on movement, decision-making, recoil, map knowledge and game-specific input behavior.

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Gamepad Tester How to

How do I test a controller for stick drift?

Connect the controller, release the sticks completely and watch the raw axis position and dead-zone visualizer. A persistent offset that returns when untouched can indicate drift or calibration issues.

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Browser FPS Test Benchmarks

What is a good browser FPS?

A stable frame rate close to the display refresh rate generally looks smooth, but consistency matters as much as the average. Large drops or poor 1% lows can make animation feel stuttery even when the average looks high.

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Mouse DPI / Sensitivity Calculator How to

How do I convert sensitivity when changing mouse DPI?

To preserve the same basic eDPI within a compatible game scale, multiply the old DPI by the old sensitivity, then divide by the new DPI to get the new sensitivity. Game-specific FOV and sensitivity formulas can still change perceived feel.

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Refresh Rate Test How to

How do I test my monitor's actual refresh rate?

Move the browser to the monitor you want to test, start the refresh-rate sampler and keep the tab visible until it finishes. Compare the estimate with the display mode selected in your operating system.

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Dead Pixel Test How to

How do I check a monitor for dead pixels?

Use solid black, white, red, green and blue fullscreen patterns and inspect the panel from a normal viewing distance. A pixel that stays consistently dark or stuck on one color across patterns deserves closer inspection.

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Screen Resolution Test Fix a problem

Why is browser resolution different from my monitor resolution?

The browser can report logical screen size, viewport size and device-pixel ratio, which are affected by scaling and zoom. The physical panel resolution may therefore be larger than the CSS pixel dimensions shown to a web page.

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Screen Color Test How to

How do I check a monitor for color banding?

Use smooth grayscale and color gradients in a dim, distraction-free view. Strong steps or bands can come from panel limitations, bit depth, HDR settings, GPU output format or the content pipeline.

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Color Test Compare

What is the difference between HEX, RGB and HSL?

HEX and RGB describe digital color using red, green and blue channel values, while HSL describes hue, saturation and lightness. They can represent the same color through different notation systems.

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Microphone Test Fix a problem

Why is my microphone not working in the browser?

Check browser permission, operating-system privacy settings, mute state and the selected input device. Close other apps that may have exclusive access and reload the test after changing permissions.

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Speaker Test How to

How do I test left and right speakers separately?

Use the Left and Right controls with a comfortable system volume. If the browser does not support stereo panning, channel-isolation controls are disabled rather than pretending to isolate a side.

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Webcam Test Fix a problem

Why is my webcam showing a black screen?

Camera permission may be blocked, another app may already be using the device, the wrong camera may be selected or a hardware privacy shutter may be closed. Stop other camera apps and reselect the camera.

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49

Mouse Tests

Use these mouse diagnostics to separate click, movement, scroll and pointer-timing problems. Each test measures a different browser-visible signal, so combining two or three related checks is more useful than relying on one score.

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37

Gaming Tests

These browser gaming tests focus on human response, input devices and browser rendering. They are designed for repeatable comparisons rather than claims about FPS inside unrelated installed games.

Open Gaming Tests
21

Audio & Camera Tests

These tools use browser media and audio APIs only after you start a test. They are designed for quick pre-call checks and troubleshooting without intentionally uploading microphone audio or webcam video.

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14

Touchscreen Tests

Touchscreen diagnostics listen specifically for touch pointers so a desktop mouse cannot create a false pass. Grid coverage checks response across the panel while multi-touch tracks simultaneous fingers.

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28

System & Network Tests

System and network tools show only information a browser or the current web request can legitimately expose. The speed test performs real network transfers; device and browser pages avoid pretending they can read hidden hardware details.

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