Mobile-Vanilla: slow page rendering in Mobile-Chrome

ArbitraryDescriptor

Recently updated Chrome (Galaxy S3, Jelly Bean 4.1 and 4.2), and I've noticed periodic slowdowns on thread rendering

Example: http://forums.penny-arcade.com/discussion/175572/strip-search-artists-assemble/p2

The page loads fine, but if I scroll down to Khoo's post, everything is super low-res, and I can see it rendering in chunks. Could it be related to the effect on 5x up-voted posts? That seems to be where it gets stuck most of the time, though not necessarily on the first such instance. Desktop view loads fine.

[Edit] Additional info: I can still click in links while its try to render, even when I scroll too far and the screen is blank. So the content is there, Chrome is just choking on something in the visualization process. I haven't noticed this on other webpages.

Bonus issue: Is there supposed to be no new thread button in mobile view? It wasn't showing up just now.

ArbitraryDescriptor

Other browsers:
'Internet' - Same issue with Awesome posts, but clears up faster.
Firefox - Same issue (but clears up faster)
Opera - Stutters when scrolling past the Awesomed posts, but doesn't shit up the rest of the thread over it.

ArbitraryDescriptor

Did some research and testing, and it's definitely the box shadow.

You're using this:
.Promoted{
box-shadow: inset 0 80px 600px #fffcdc;
}
It's that 600px blur that the browsers are choking on.

This runs fine:
.Promoted{
box-shadow: inset 0 0px 60px #44DDEE;
}
(And is easier to to read)

(...and a pretty blue)

[Edit]Why 60? At 200 it was perfectly tolerable in Chrome (the worst of the set), but I could still see glitches if I scrolled from top to bottom as fast as I could. I'm testing this using a copy of that page with no JS or CSS apart from that class, so I'm allowing it could perform worse with everything else turned on, or there were more than 3 'Promoted' posts. At 100px, I can glimpse a render glitch every now and then (1:9 maybe), and at 60px I can't detect any. So 60 seemed like a safe suggestion.

fightinfilipino

can i add a somewhat-related glitch to report on mobile browsers?

apparently when you create a thread in the mobile version of the site (Android/Chrome/Jelly Bean), the thread gets posted to this subforum, rather than the forum you were in at the time.

i have not rigorously tested this for each subforum, although i suspect Tube/the mods/Geth might be upset if i tried...

Cokomon

If this is a place to put bugs related to the latest version of mobile Chrome, I have one. On the Nexus 7, I view this site in the normal mode and this was fine until the update. Now some of the posts have a small sized font and some of the posts have a larger font more fit to the screen. It is kind of jarring and makes the forums hard to read on the tablet. I'm sorry I don't have any screenshots of what I am describing.

ArbitraryDescriptor

Screenshot of the font size variance:
http://i18.photobucket.com/albums/b134/crackhed404/Screenshot_2013-03-07-06-36-33_zps358bd243.png

Firefox does it too, Opera does not.

Cokomon

Yup, that is exactly the issue I am seeing.

ArbitraryDescriptor

The promoted box-shadow seems to have been removed, thereby rendering Chrome's shitty rendering of it irrelevant. Thanks @IcyLiquid !

IcyLiquid

Pleasure