Articles: Scroll Performance Demonstration

This page intentionally combines common UI effects: sticky navigation, soft blur on the header, animated decorative glows, shadows, and repeated content cards. None of these effects are extreme on their own, but together they can make scrolling and page navigation feel sluggish on low-end devices.

What to do: scroll continuously for ~15 seconds, then quickly tap “Dashboard” and return to “Articles”. Watch for delayed taps, inconsistent scroll speed, and occasional frame drops.

sticky header blur + transparency shadows many cards subtle continuous animations

Section 1 — Everyday Motion

Modern interfaces often use gentle motion to feel “alive”: cards fade in, backgrounds drift slightly, and components subtly pulse. The effects are usually designed to be tasteful rather than flashy.

On powerful devices, this feels smooth. On low-end hardware, the browser may spend more time painting and compositing each frame, leading to uneven scrolling and “heavy” navigation.

In other words, the UI isn’t broken — it’s simply running out of rendering budget.

Section 2 — Shadows, Transparency, and Composition

Shadows and translucent layers increase visual depth. Combined with a sticky header and layered backgrounds, the browser has more work to do when repainting the viewport during scroll.

Even mild blur and gradients can become noticeable costs when applied across large areas or many elements. The effect is more visible when you scroll fast and stop suddenly.

Look for: delayed settling after you stop scrolling, and small “jumps” as the UI catches up.

Section 3 — Repetition Magnifies Cost

One animated card is fine. Ten animated cards are usually still fine. But on low-end devices, repeated patterns can push the main thread over budget, especially when animations run continuously.

This page repeats the same style on purpose. Each section includes an animated glow overlay and a shadowed container, increasing the total work during scroll.

The result: scrolling feels less “connected” to your finger, and tapping links may feel delayed.

Section 4 — Long Reading Experience

Long-form pages often include cards, callouts, and fancy headers. The page gets heavier as more components appear in the viewport.

On low-end devices, you may notice that the UI feels smooth at the top, but becomes less consistent after sustained scrolling.

Keep scrolling. The goal is to show real “reading + UI effects” conditions.

Section 5 — Navigation Under Load

Navigation becomes noticeably worse when the device is already busy. If animations are running continuously, switching pages can feel slower because the browser must finish pending work first.

Try tapping Dashboard while scroll momentum is still active.

On a low-end phone, you might see the tap register later than expected.

Section 6 — More Content, Same Effects

This section exists mostly to keep the viewport full of layered content. The more you scroll, the more obvious the performance characteristics become.

If you want an even stronger effect, open this page in a browser tab and keep it running for a minute, then come back and scroll again.

Heat and battery-saving behavior can also reduce smoothness.

Section 7 — Realistic UI “Jank”

The goal isn’t to crash the browser. The goal is to demonstrate the kind of mild jank that users experience in the real world when a UI is slightly too heavy for the device.

Watch for uneven scroll velocity and delayed reactions to taps.

On better devices, you’ll see it’s mostly fine — which is exactly the point.

Section 8 — End of the Page

If scrolling was smooth, your device handled it well. If it felt “thick”, inconsistent, or delayed, you have a strong demonstration that moderate UI motion can affect UX on low-end hardware.

Now switch back to Home and try again.

Repeat a couple times and compare devices.