Firefox High RAM Usage When Blocklist Is Enabled

[EvilHumphrey]

Concise Description

Enabling the blocklist feature (with no channels added) causes Firefox’s RAM usage to spike to 100% upon opening a YouTube channel (via middle-click) from a currently playing video. Disabling the blocklist resolves the issue and prevents the memory surge.

Additional Context:
Restarting Firefox or disabling the blocklist consistently prevents the RAM spike.

Browser/s

Firefox

Other Browser:

No response

'Steps to reproduce' - Which of our features is required for the bug to happen?

Enable the extension’s blocklist feature (leave blocklist empty). Play a YouTube video. Middle-click the channel’s name to open it in a new tab. Observe RAM usage climbing to 100%. Disable the blocklist, repeat steps, and note normal RAM usage.

Since when?

Today (only time I've tried enabling the blocklist)

Does the bug still happen when you log out of YouTube?

None

..No? Then please paste your yt.config_.EXPERIMENT_FLAGS. Twice (With the error & Without)

No response

Are any errors or related log-messages shown in the Browser-Console? (F12)

No response

Tested as the only active extension? (incognito mode or another browser users):

None

Expected preferred behavior:

No response

ImprovedTube Version

No response

Your Settings (From the Extension's ⋮-Hamburger menu > Settings > Backup & reset > Export settings)

No response

Your YouTube-Document

No response

OS / Device:

Windows 11 Pro 23H2 Build:22631.4602

[ImprovedTube]

Hi and thank @EvilHumphrey! Cpu too? did anybody else get this yet? Can't imagine our code combined with youtube-changes to cause an eternal loop there, and that would usually rather take CPU only or first. Somebody please look at the code

[EvilHumphrey]

Hello! I did not observe any significant CPU usage. However, I realized that Firefox’s “Recommended settings for this PC” were enabled, which includes hardware acceleration—a detail I initially forgot to mention. In my experience, Firefox can occasionally exhibit memory leaks, particularly when numerous extensions are in use.

Earlier today, I noticed high memory usage after disabling the blocklist feature. Following some adjustments aimed at addressing potential memory leaks, I re-enabled the blocklist feature and then loaded a YouTube creator page. With hardware acceleration turned off, the memory usage remained stable. I apologize if this issue turns out to be specific to my setup. Nonetheless, I sincerely appreciate the extension and thank you for creating it!

[ImprovedTube]

If you are on to figuring out a Firefox issue, thats worth even more!