[Bug]: Stutters while browsing

[Piyush-io]

Operating system

macOS

Version

Version 0.6.5.1 (Official Build, Chromium 142.0.7444.162) (arm64)

Have you tested that this is not an upstream issue or an issue with your configuration?

• I have tried reproducing this issue in Chrome and it could not be reproduced there
• I have tried reproducing this issue in ungoogled-chromium and it could not be reproduced there
• I have tried reproducing this issue in Helium with a new and empty profile using --user-data-dir command line argument and it could not be reproduced there

Description

Scrolling on external monitor seem like 60 fps despite 180 Hz refresh rate in macOS Tahoe.

How to Reproduce?

1. I upgraded to Tahoe 26.2
   Nothing else

Actual behavior

When scrolling on Helium while being MacOS Tahoe and on external monitor it feels 60hz instead of 180hz.
Like its not smooth. I even tested on the UFO test it says 180hz but scrolling feels bad. I dont get it.

Expected behavior

Smoother and faster scroll on high refresh rate.

Additional context

I tried scrolling on Dia Browser and feels perfectly fine but on Helium it feels laggy.

[wukko]

do you have any flags enabled? is power saving mode enabled?

[Piyush-io]

I think these only

[wukko]

can you try to disable all of these and check if scrolling works fine?

[Piyush-io]

Its like somewhat better but still not the same performance as sequoia

[phonkd]

jsut wanted to mention that scrolling with linear mouse app on macos26 might be the issue since it was for me...

[Piyush-io]

When i closed the lid of mac and was using monitor only then it works fine. I dont get is the issue.

I think something related to this according to gpt