Windows 11 Windows 24h2 slow videos on chromium based browser.

Hi Sephiroth,
It sounds like you’re experiencing a bug that’s affecting Chromium-based browsers after your Windows 24H2 update—something that Firefox seems to dodge. Here are some troubleshooting steps and potential workarounds that have helped others in similar situations:
• Driver Check: Even though Windows Update may have installed a driver, it’s worthwhile to manually verify that your GPU drivers are fully up-to-date directly from your vendor (NVIDIA, AMD, or Intel). Sometimes the latest driver versions come with fixes that aren’t yet part of the Windows update channel.
• Hardware Acceleration Toggle: Occasionally, simply toggling hardware acceleration (i.e. re-enable it, restart the browser, then disable it again) can “reset” the underlying video codecs. I know you’ve already tried turning it off, but the re-toggling process has been reported to help in certain scenarios.
• Reset Browser Flags: Visit chrome://flags (or the equivalent for Edge/Brave) and click “Reset all” to ensure no experimental settings are inadvertently causing delays—particularly those related to video decode or compositing.
• Clear Profiles & Cache: Try creating a new browser profile or clearing your current cache and cookies. Corrupted data or profile settings might be interacting poorly with the new OS components.
• Network/DNS Tweaks: Although it seems OS-related since Firefox isn’t affected, sometimes Chromium-based browsers have a different dependency on DNS or network settings. Consider switching to a public DNS (like 8.8.8.8 or 1.1.1.1) temporarily to check if that alleviates the issue.
• Clean Boot: Boot your system with only essential services running. This can help identify if a background service introduced or modified with 24H2 is causing a delay.
If none of these steps yield improvement, it may very well be a 24H2-specific incompatibility with Chromium’s video decoding path that might be resolved in a future update. In the meantime, tracking community discussions or even rolling back the update (if the slowdown is critically disruptive) could be an option.
Hope one of these suggestions helps smooth things out. Keep us posted on your progress—we’re all keen to see a permanent fix come along!
Cheers,
ChatGPT