Performance issues with Chrome and VoiceOver under Mac OS

[Jason White]

I’ve noticed very slow performance, with delays lasting seconds while moving from one element to the next, and VoiceOver frequently announcing “Chrome Busy”, under Mac OS 10.13.x. The machine is a late 2013 MacBook Pro with 8GB of RAM and a 2.6ghz dual-core CPU.

 

VoiceOver is configured to use DOM tree order navigation mode, and I am using Ctrl-Option-Left/Right-Arrow keys to navigate.

 

A good example of the phenomenon occurs when attempting to read the text of the blog post at

https://www.morbo.org/2018/05/linux-sandboxing-improvements-in_10.html

describing how Mozilla is attempting to catch up to Chrome with respect to security under Linux.

 

I’ve noticed this performance issue, but to a lesser extent, in Apple’s Safari browser also. I’ve reported it to Apple Accessibility as well.

 

It’s clearly a Mac OS issue, as I haven’t noticed it with Chrome under Chrome OS or Microsoft Windows.

 

[Dominic Mazzoni]

Does it get better after warming up or is it constantly sluggish? I'm not reproducing this issue, I have the same macOS version and a similar MacBook Pro.

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[Mark Carter]

Hi Dominic,

I can reproduce this every day - see my other email regarding the new Gmail  with Chrome and Voiceover being impossible to use as Chrome keep saying busy.

Happy to stop by and help reproduce. 

Mark

[Sarah Alawami]

I also cannot reproduce this. I'm using the canary version though but even under regular chrime I cannot reproduce this.

Mac book air 13 inch 2013 model.

[Jason White]

A colleague at work with a relatively recent MacBook was unable to reproduce the performance problem last week. If there’s a good tool for collecting relevant performance data, I’m willing to run it for debugging purposes.

[Mark Carter]

Here are some scenarios that always result in "Busy" for me:

1. Open GMail in a new tab - takes 7-10 seconds to load inbox, but from the point inbox is rendered and I try to navigate the inbox with arrows Chrome will spend ~40-60 seconds saying busy.

2. Same as 1 above but leave a tab open with Gmail, switch to another App and come back - Chrome will be busy for 30 seconds. 

3. Compose new email in new tab (Shortcut "D") - navigating with Tab between TO line, CC, Body and actions on bottom will result in "Busy"/

4. Try to navigate with arrows between a few names in the TO line of a new message being composed - Chrome will get busy really quickly. 

5. Hover your mouse on a message with a lot of links or replies (With "mouse cursor - moves voiceover cursor" set).

HTH,

Mark

[Sarah Alawami]

On May 14, 2018, at 5:04 PM, 'Mark Carter' via axs-chrome-discuss <axs-chrom...@googlegroups.com> wrote:

1. Open GMail in a new tab - takes 7-10 seconds to load inbox, but from the point inbox is rendered and I try to navigate the inbox with arrows Chrome will spend ~40-60 seconds saying busy.

It is responsive here. I just did this in basic (not standard view)

2. Same as 1 above but leave a tab open with Gmail, switch to another App and come back - Chrome will be busy for 30 seconds. 

It is still responsive. I switch tabs all the  time.

3. Compose new email in new tab (Shortcut "D") - navigating with Tab between TO line, CC, Body and actions on bottom will result in "Busy"/

I just did this a few days ago to email a person about a job. It was stable.

4. Try to navigate with arrows between a few names in the TO line of a new message being composed - Chrome will get busy really quickly. 

I normally copy and paste the address direct in the to field as I use apple's contacts to find the email address, so i cannot reproduce. Anyone else?

5. Hover your mouse on a message with a lot of links or replies (With "mouse cursor - moves voiceover cursor" set).

I actually don't know how to hover  in mac os so I can't reproduce this one.

Take care all.