Front-end frameworks have become incredibly powerful over the last few years. But one question still sparks endless debates among developers:

Which framework is actually the fastest?

People often mention frameworks like React, Vue, Angular, Svelte, Solid, Qwik, and Preact as the top choices in modern web development. Each claims to offer better performance, smoother rendering, or a better developer experience.

Instead of relying on opinions, I decided to run a real stress test.

I built a benchmark system that pushed these frameworks to their limits by rendering and updating up to 200,000 rows of data. The results were surprising and challenged many assumptions I previously had about framework performance.

The Goal of the Benchmark

The purpose of this benchmark was simple:

Test how frameworks behave under extremely heavy UI workloads
Measure raw rendering performance
Compare DOM updates and reactivity systems
Observe both development and production performance

Rather than testing tiny demo apps, this benchmark focused on something closer to real enterprise-scale applications where performance problems actually appear.

How the Benchmark Was Built

To make the comparison fair, I created a clean benchmarking environment from scratch.

The setup included:

A monorepo structure
A shared utility library for generating data and measuring performance
Minimal framework implementations
Automated testing with Playwright

Every framework project was stripped down to the bare minimum.

That means:

No styling
No images
No unnecessary files
No additional libraries

Only the core rendering logic remained.

The frameworks tested were:

React
Angular
Vue
Svelte
Solid
Qwik
Preact

What the Stress Test Actually Did

Each framework had to:

Generate thousands of random rows
Render them to the DOM
Update row positions
Swap rows repeatedly
Clear everything from the DOM

The benchmark scaled through several levels:

500 rows
5,000 rows
50,000 rows
100,000 rows
200,000 rows

This allowed me to observe how performance changed as the workload increased exponentially.

What Was Being Measured?

The test focused on several important areas:

Initial rendering speed
DOM creation performance
Virtual DOM diffing cost
In-place updates
Row swapping efficiency
DOM cleanup speed

This benchmark specifically targeted one critical part of front-end performance:

Handling massive amounts of dynamic UI updates efficiently.

Why Development Mode Matters

Most benchmarks only focus on production builds, but I tested both:

Development mode
Production mode

Development performance is often ignored, but it matters a lot in real-world projects.

Large enterprise applications can become painful to debug if the development server struggles with rendering large component trees or handling complex state updates.

A framework might be extremely fast in production, but if development mode becomes slow and unstable, the developer experience suffers badly over time.

Development Mode Results

The development-mode results were very interesting.

React vs Angular

React and Angular performed surprisingly similarly during development builds.

At around 50,000 rows:

Angular was slightly faster
React caught up as the row count increased

Overall, the difference between them was relatively small.

Preact’s Unexpected Weakness

One of the biggest surprises was Preact.

Even though Preact is famous for being lightweight, its development performance was significantly slower than React.

Rendering large datasets sometimes took several minutes.

This likely happens because Preact prioritizes small bundle size over heavy development optimizations. React’s development tools and internal optimizations appear to handle huge virtual DOM trees more efficiently during debugging scenarios.

Vue, Svelte, and Qwik

Vue, Svelte, and Qwik constantly traded positions depending on the dataset size.

One surprising discovery was that Vue occasionally outperformed Svelte in some tests.

This was unexpected because Svelte is often considered one of the fastest frameworks available.

Solid Dominated Development Mode

The clear winner in development mode was Solid.

Unlike React or Angular, Solid does not rely on a virtual DOM.

Instead, it uses a system called fine-grained reactivity with signals.

Rather than re-rendering entire components, Solid updates only the exact DOM nodes that change.

Because of this approach:

Performance scaled more linearly
Large datasets remained manageable
Rendering overhead stayed low

This gave Solid a major advantage under heavy workloads.

Production Mode Changed Everything

Once production optimizations were enabled, the rankings changed dramatically.

Angular Fell Behind

Angular showed the weakest overall production performance.

Its traditional change detection system still relies heavily on traversing component trees to check for updates.

At very large scales, especially near 200,000 rows, this became extremely expensive.

React Improved — But Still Struggled

React performed better than Angular, but still had noticeable bottlenecks.

The biggest issue came from virtual DOM diffing.

Before updating the real DOM, React compares large virtual DOM trees in memory. With extremely large datasets, this process consumes significant CPU resources.

The more rows involved, the heavier the diffing cost becomes.

Qwik’s Different Philosophy

Qwik delivered interesting results.

At smaller scales, it sometimes outperformed Vue.

But as datasets grew larger, its performance became less competitive.

This makes sense because Qwik is designed primarily around:

Fast startup performance
Resumability
Minimal hydration

It focuses more on loading efficiency than continuous large-scale DOM updates.

Vue Performed Better Than Expected

Vue performed extremely well overall.

Although Vue also uses a virtual DOM, it combines it with reactive dependency tracking.

This allows Vue to know exactly which components require updates instead of re-rendering everything unnecessarily.

As a result:

Vue stayed highly competitive
Performance remained stable
It often stayed close to Svelte

Preact’s Huge Comeback

Preact completely transformed in production mode.

After removing development overhead, its lightweight virtual DOM became extremely fast.

Its production performance ended up surprisingly close to Solid in several scenarios.

This was one of the most unexpected outcomes of the entire benchmark.

Solid Became the Performance King

Solid delivered the best overall performance in production mode as well.

Because it compiles directly into highly optimized DOM operations, it avoids many of the expensive abstractions used by virtual DOM frameworks.

Its fine-grained reactivity system allowed it to maintain excellent scaling even at massive row counts.

The Biggest Bottleneck: Row Swapping

One of the most revealing parts of the benchmark was the row-swapping test.

This operation caused major slowdowns for React and Angular.

Why?

Because virtual DOM frameworks often struggle when elements move positions frequently.

If key tracking is not perfectly optimized, frameworks may:

Destroy DOM nodes
Recreate them entirely
Perform unnecessary diffing

All of these operations are expensive.

Frameworks with direct DOM updates handled swapping much more efficiently.

React’s Surprising Strength

Despite its weaknesses, React had one major advantage.

Its initial render speed in production was actually extremely strong.

React quickly builds a virtual DOM tree and pushes content into the real DOM during the first render.

Without heavy update logic involved yet, this process becomes very fast.

The real problems only appear later during:

Reordering
Swapping
Continuous updates

Final Thoughts

Performance is not the only factor when choosing a front-end framework.

Developer experience, ecosystem, tooling, community support, and maintainability are all incredibly important.

However, benchmarks like this reveal how different rendering architectures behave under pressure.

Here’s the general takeaway from the test:

Solid delivered the best overall performance
Vue performed far better than many people expect
Preact struggled in development but became impressive in production
React remained strong in initial rendering but struggled with large updates
Angular suffered heavily at extreme scale
Qwik prioritized startup optimization over heavy dynamic updates
Svelte stayed competitive but did not completely dominate

At the end of the day, the best framework depends on the type of application you’re building.

But if your project requires handling huge amounts of constantly changing data, understanding these performance differences becomes extremely important.