Thanks for reporting.

In my environment, the CPU usage goes down after a few seconds and I can interact with the page after that. Is your experience the same? Or you cannot interact with the page forever?

Can you share the "relatively simple CSS animations"?

CPU usage won't get any lower on the respective page in my environment. However, Chrome offers to kill the tab after a few seconds. CPU usage also goes up when scrolling regular pages, opening new ones or switching tabs. Further, it takes about 2-3 seconds for links to become active on newly open pages. It's a general performance issue.

I got this behaviour with one of the last releases (3-4 days) from the official beta repository. 

OS: Debian testing, amd64
UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.47 Safari/537.36

Yep, I see the same kind of symptoms as @#2. After the 2-3 seconds for the
links to become active, they are only active for a second or two before it
goes unresponsive again. Chrome also doesn't offer an option to kill the
tab.

I'm not at home at the moment, so I'll have to try and remember to put a
test cae together for the animation thing when I do get home.

Thank you for providing more feedback. Adding requester "yhirano@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

@#1 It looks like the CSS animations issue has fixed itself - I hadn't
tested it for a while. Several websites are still seriously unresponsive
though. It's really annoying.

According to my experience, JavaScript seems to cause all this trouble. Flash videos work fine once the play button finally gets active. Pure HTML/CSS pages work without any problems.

Pages which load their content dynamically while scrolling, such as facebook or twitter, break the whole application and those pages can effectively not being browsed using Chrome beta. 

Here's another URL that causes a ton of lag: http://www.radicalfishgames.com/

Appears the issue reported in #1 has been resolved (see #5).

Please file a new issue for #7 -- although I could not reproduce it.

@#8 No, the issue hasn't been resolved. The CSS animations thing was something else entirely that I thought of that I should have filed a separate issue about. This issue was *supposed* to be about comments #1, #2, #3, #6, and #7. I don't think that filing another issue would be a good idea considering this issue was supposed to be about #7 in the first place.

Seems to be fixed in 52.0.2729.3. At least on my machine.

Hello, this is your friendly blink triage on-call. I cannot repro radicalfishgames on
Version 52.0.2734.0 canary (64-bit) Pixel 1 (link)

https://hullstudent.com/events
seemed to have a lot of javascript running. Does the javascript profiling look correct?

Unable to reproduce the issue on Ubuntu 14.04 using chrome latest Beta M51-51.0.2704.47 by following steps mentioned in the comment #0. Observed there was a little spike in CPU usage only at the time while loading the webpage https://hullstudent.com/events but later on gradually it got reduced and browsers seems to be responsive.

Reporter@- Could you please check the same on latest chrome Beta by creating new profile with out any apps or extensions in your browser.

Thanks!

@#14 Thanks for the advice. A new profile seems to solve the issue. I then disabled a few likely looking extensions and re-enabled them one by one - and found that Adblock Plus was to blame. Removing it and replacing it with uBlock Origin drastically improves responsiveness. Maybe it's a bug in adblock? The trouble is that I don't get any notification when an extension is updated.

Thank you for providing more feedback. Adding requester "brajkumar@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Thanks for troubleshooting! Adblock Plus lists this site as their support page:
https://adblockplus.org/forum/viewforum.php?f=10

I'm going to close this as WontFix as it's an external issue.

Thanks for reporting the issue!

 Issue 612101  has been merged into this issue.