High CPU Usage and Overheating in Brave on Ubuntu 26.04

Hi everyone,

I’m experiencing a strange issue with Brave on Ubuntu 26.04, and I’m trying to find out whether this is a browser bug or a website-specific problem.

My system

  • OS: Ubuntu 26.04
  • CPU: AMD Ryzen 5 8600G
  • GPU: AMD Radeon 760M (integrated)
  • Browser: Brave (latest stable version)

The problem

Whenever I open https://build.nvidia.com, my CPU usage becomes extremely high, and my CPU temperature quickly rises to around 80°C.

This only happens on this website. Other websites work normally and do not cause excessive CPU usage or high temperatures.

I also noticed that the browser appears to be rendering the page mostly on the CPU instead of using GPU acceleration.

What I have already checked

  • Hardware acceleration is enabled in Brave.
  • Graphics acceleration is enabled.
  • Vulkan has been tested.
  • The issue is reproducible every time I visit the site.
  • Other browsers and websites do not show the same behavior.

My questions

  1. Is this a known issue with Brave?
  2. Is this caused by the NVIDIA Build website?
  3. Is there a way to force better GPU acceleration for this type of webpage on Linux?
  4. Has anyone else experienced high CPU usage on this website?

Any suggestions or debugging steps would be greatly appreciated.

Thank you!