Maintainer update
From @MarshallOfSound (#48311 (comment)):
Hey folks, anyone experiencing this issue can you please raise a Feedback (via Feedback Assistant) with Apple. Make sure you send it while the issue is occurring and ensure you include a sysdiagnose with your report (I think that's automatic now, but check the box if there's a box). We need a lot more to go on and this is likely a macOS issue.
Preflight Checklist
I have read the Contributing Guidelines for this project.
I have read the Contributing Guidelines for this project. I agree to follow the Code of Conduct that this project adheres to.
I agree to follow the Code of Conduct that this project adheres to. I have searched the issue tracker for a bug report that matches the one I want to file, without success.
Electron Version
37.3.1
What operating system(s) are you using?
macOS
Operating System Version
macOS 26 Tahoe RC
What arch are you using?
arm64 (including Apple Silicon)
Last Known Working Electron version
N/A, issue only persists since macOS 26
Does the issue also appear in Chromium / Google Chrome?
No
Expected Behavior
Smooth 120fps experience even when Electron-apps are open or not minimized
Actual Behavior
Using an M1 Max MacBook Pro, having Electron-based apps open / not minimized causes a huge lag.
CPU and GPU usage remains low, but if I have Discord and VS Code open, moving windows, scrolling is stuttery. It happens even when only Discord is open but it gets worse if I open a second Electron app.
This is kind of weird because while having Discord open and I'm in Chrome, the lag still occurs, but it's fixed if I minimize Discord (even though Chrome is fully in focus and maximized). This happens since upgrading to macOS 26 RC, macOS 15 didn't have this issue.
There is a similar lag if I open Settings - Wallpapers, moving the Settings window is laggy then (looks like 60fps instead of 120).
Testcase Gist URL
No response
Additional Information
No response