Twitch Causing High CPU Usage on Firefox or Chrome

Published by Nyau Wai Hoe - Updated on

Online streaming platforms like Twitch have gained immense popularity over the years, providing a platform for content creators to showcase their talents and engage with a vast audience. However, many users have reported encountering a common problem: high CPU usage when watching Twitch on web browsers like Firefox and Chrome, particularly on Windows 11 or 10 PCs. In this article, we will look into the reasons behind this issue and provide you with some effective solutions to tackle the problem.

Also see: Game Lag When Watching YouTube or Twitch on Chrome

Twitch High CPU Usage on Firefox or Chrome

Why does Twitch use so much CPU?

High CPU usage occurs when the central processing unit (CPU) of your computer is overloaded with tasks, leading to sluggish performance, increased fan noise, and even system crashes. Several factors contribute to Twitch causing high CPU usage:

HTML5 and resource-intensive elements

Twitch made the transition from Adobe Flash to HTML5 to enhance the streaming experience for its users. While HTML5 offers several advantages, including better performance and security, it can be resource-intensive, especially when handling high-definition video streams and interactive elements like chat, emotes, and overlays. The constant rendering and processing of these elements can put a strain on the CPU, leading to increased usage.

Related concern: High GPU Usage While Watching YouTube or Twitch Videos

Chat and emotes animations

Twitch chat is a vital part of the streaming experience, allowing viewers to interact with each other and the streamer in real-time. However, the constant flow of chat messages and animated emotes during live streams can put additional stress on the CPU. Emotes with complex animations can be particularly demanding, consuming CPU resources even when the stream itself is not resource-intensive.

Twitch Chat Emotes Lag and High CPU Usage

Extensions and overlays

To enhance their broadcasts and engage with their audience, streamers often use various extensions and overlays on their Twitch channels. These additional elements can add to the CPU load, especially when multiple streams with extensions are open in different tabs. Features like donation alerts, follower notifications, and interactive games can consume additional CPU resources, contributing to high CPU usage.

Recommended read: Why Does Task Manager Show Multiple Chrome Instances?

Twitch extensions causes high CPU usage

Browser extensions

Third-party browser extensions and add-ons can interfere with Twitch’s performance, causing additional CPU usage. Some extensions may inject code into Twitch pages, leading to conflicts that result in higher CPU utilization. It’s essential to review and manage your browser extensions, disabling those that are not necessary or causing performance issues.

Solutions to reduce Twitch’s CPU usage

Quality settings

Adjusting the video quality settings on Twitch can significantly reduce CPU usage. By default, Twitch streams at the source quality, which can be resource-intensive. Lowering the video resolution from source quality to 720p or 480p will lessen the burden on your CPU, as it won’t have to work as hard to process the video stream.

Reduce Twitch streaming quality

To change the quality settings, click on the gear icon (“Settings“) on the Twitch player and select a lower resolution that suits your preference and hardware capabilities.

Useful tip: How to Limit CPU Usage of a Process in Windows 11

FrankerFaceZ and BTTV extensions

FrankerFaceZ and BetterTTV (BTTV) are popular browser extensions that enhance Twitch’s functionality, providing additional emotes, chat features, and customization options. While these extensions are valuable for many users, some of their features might contribute to increased CPU usage.


Consider disabling certain features, using their lightweight versions or disabling the entire extension to mitigate the impact on your CPU. Additionally, keep these extensions updated, as newer versions often include performance improvements.

Uninstall BetterTTV to fix Twitch high CPU usage on Chrome

Use alternate browsers

While Chrome and Firefox are widely used, other browsers like Microsoft Edge or Opera might handle Twitch streams more efficiently. Different browsers have varying levels of optimization and resource management, which can affect CPU usage. Test Twitch on different browsers to find one that utilizes your CPU more effectively for streaming purposes.

Linked issue: Computer Fan is Loud When Watching Twitch or YouTube Videos

Firefox vs Chrome for Twitch

Both Firefox and Chrome are built on different architectures and have their own methods of handling media content. This might lead to variances in CPU utilization when using Twitch.

  • Firefox: Uses a system called Quantum which is designed for parallel processing. While this system is efficient, certain extensions or settings might interfere with its efficiency when streaming.
  • Chrome: Chrome’s multi-process architecture may spawn multiple processes for different tabs, extensions, and plugins. This can result in high CPU usage, especially when many tabs are open alongside Twitch.

Learn more: How to Set Chrome as Default Browser in Windows 11

Which browser is better for Twitch, Chrome or Firefox

Disable hardware acceleration

Both Chrome and Firefox have hardware acceleration enabled by default, which offloads certain tasks to your GPU (Graphics Processing Unit). While this can improve overall performance in some cases, it can lead to increased CPU usage, especially if there are conflicts between the GPU and CPU.

To disable hardware acceleration in Chrome, click “Settings,” then “System,” and toggle off “Use hardware acceleration when available.”

Disable hardware acceleration on Chrome

In Firefox, click “Settings,” search for “Hardware Acceleration,” and uncheck the box. Experiment with both hardware acceleration enabled and disabled to determine which setting works best for your specific hardware and Twitch usage.

turn off hardware acceleration firefox video stuttering

Limit active Twitch tabs and background processes

Having multiple Twitch streams open in different tabs or running streams in the background can strain your CPU, especially if they are running simultaneously. Close inactive Twitch tabs and avoid leaving streams running when not actively watching them.

Additionally, ensure that other resource-intensive applications are not running in the background, as they can compete for CPU resources with Twitch.

Twitch High CPU Usage Firefox

Update browser and GPU drivers

Ensuring that your browser and GPU drivers are up to date is essential for optimal performance. Software updates often include optimizations and bug fixes that can improve overall performance, including CPU usage on streaming platforms like Twitch. Check for updates regularly and install them to take advantage of the latest improvements and enhancements.


High CPU usage when using Twitch on Firefox or Chrome can be a result of various factors, ranging from video quality settings and resource-intensive extensions, to hardware acceleration. By understanding the root causes and implementing the solutions mentioned above, users can enjoy a smoother Twitch streaming experience. Ultimately, the key is to experiment and find what combination of settings works best for your specific system.

Nyau Wai Hoe
Nyau Wai Hoe is the Founder and Chief Editor of With a degree in software engineering and over 12 years of experience in the tech support industry, Nyau has established himself as an expert in the field, with a primary focus on the Microsoft Windows operating system. As a tech enthusiast, he loves exploring new technologies and leveraging them to solve real-life problems.

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