Firefox extension utilizes lot of CPU

[wslyvh]

Every time I open up or try to do any action using the browser extension my CPUs go crazy.
I can actually hear them spin up. % usage jumps to ~!5%. The extension itself becomes really slow.
When I initially open it, it's basically unusable, so I wait 2-3 seconds to "cool down" to around 7-8% CPU usage, before clicking or performing any next action.

I've had this issue since the launch of the extension (Oct '23) and disabled it immediately again after installing.

I recently formatted and did a clean install of OS + Browser + extensions, so wanted to give it another try but still experiencing the same issues.

Laptop: System76 Lemur Pro (11th gen, i7, 40GB ram)
OS: Pop_OS 22.04
Firefox version: 122.0
Rainbow extension version: 1.3.62

Only 1 wallet address is added: wslyvh.eth

[gvastethecreator]

same problem here, just uninstalled

[DanielSinclair]

Hi folks! We are investigating and investing in fixes for this issue. We introduced our first performance improvement last week specifically for Firefox users that was related to overuse of the network RPC by our NFTs feature. We have found that Firefox seems to suffer unique performance issues for the new Manifest v3 extension standard, and have pinpointed some of these instances to network activity where Firefox's main thread will bog down during a swarm of network requests. This also appears to impact some operating systems more than others, including Linux distros where Firefox itself seems to be under optimized. We will continue to optimize our network activity to mitigate this, and are seeking additional performance gains around the codebase.

If you find specific reproduction paths or scenarios that worsen performance, or have additional insights or optimization ideas, definitely let us know. We are actively working on this, and will keep this thread updated as we make progress.

[gvastethecreator]

Hi folks! We are investigating and investing in fixes for this issue. We introduced our first performance improvement last week specifically for Firefox users that was related to overuse of the network RPC by our NFTs feature. We have found that Firefox seems to suffer unique performance issues for the new Manifest v3 extension standard, and have pinpointed some of these instances to network activity where Firefox's main thread will bog down during a swarm of network requests. This also appears to impact some operating systems more than others, including Linux distros where Firefox itself seems to be under optimized. We will continue to optimize our network activity to mitigate this, and are seeking additional performance gains around the codebase.

If you find specific reproduction paths or scenarios that worsen performance, or have additional insights or optimization ideas, definitely let us know. We are actively working on this, and will keep this thread updated as we make progress.

mainly while trying to sign anything it occurs, tried with brand new installations and everything.

[DanielSinclair]

@gvastethecreator We've released another performance fix for Firefox this week. Do you happen to see any improvements in your usage?

[wslyvh]

Just tried it again, but same issue. First interaction with the extension (logging in) immediately spins up CPU again

Uninstalled :(

[wslyvh]

Re-tried after a fresh laptop install again, but same issue. Seem like some improvement, but still hard to use as any interaction (e.g. modal popup, sign tx, etc.) freezes browser for a few secs at every click

Pop_OS!
Firefox: 132.0.2 (64-bit)
Rainbow 1.5.62