[Edit: I was able to resolve this issue by removing the bw extension from Firefox and then adding it back. Earlier, I had tried disabling and then re-enabling the extension, but that did NOT fix the problem, although CPU usage dropped immediately whenever the bw extension was disabled. I have no idea how the problem persisted through multiple updates of bw and Firefox, but I’m glad that I finally found this fix! Leaving this post in case anyone else encounters the problem.]
I’m seeing high CPU usage (~16%) on Windows 10 with the Firefox Bitwarden extension, but only if I have NOT logged into my vault. As soon as I login, CPU usage drops to 1% or less. Once I’ve logged in, I can logout and usage does not increase. BUT if I open a new Firefox window while logged out, usage immediately jumps back to around 16%.
In the Windows Resource Monitor I can see one of my virtual CPUs showing 100% utilization. The 100% utilization jumps from one CPU to another, but always pegs at least 1 CPU to 100%.
I checked this behavior still exists with newest updates (see version info below) to BW and FF, but I think it’s probably been going on for months and I just finally figured out the high usage was related to BW.
I’d appreciate some feedback as to whether this is a bug, or if there might be something I can adjust to fix the issue. Thanks!
Bitwarden Extension: 2023.1.0
Firefox 109.0 (64-bit)
Edition Windows 10 Pro
OS build 19045.2364
Experience Windows Feature Experience Pack 120.2212.4190.0
Dell G5 5587
Processor Intel(R) Core™ i7-8750H CPU @ 2.20GHz 2.21 GHz
Installed RAM 16.0 GB (15.8 GB usable)
System type 64-bit operating system, x64-based processor