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Forum scroll speed solution


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#1 Chronojam

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Posted 01 December 2011 - 02:00 PM

Hey everybody, I did a little digging into what could be causing slowdown on the forum. Chrome seems to be the biggest offender, so I focused on that. Turns out there are several known issues at this time, which specifically relate to things our forum display uses. It sounds like Google is working on fixing the issues; most are issues reported from January-November of this year.

If you are curious, check out related Google Chrome trouble tickets 102696, 104733, 105030, 103996, 95164, 575, 103386, 72553, 80507. The conclusion is the current rendering system just has a lot of problems, and there is not much we can do on our end other than stop doing several things that Chrome did once support. By using custom CSS overrides you can simply disable functionality that Chrome does not currently implement properly on your end. A lot of the screw ups, especially for Windows 7 running Chrome, seem fairly recent. You may also be be interested in issue 44390, although that was specifically for Mac versions.
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#2 Chronojam

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Posted 01 December 2011 - 02:14 PM

•Rendering and scrolling when rounded corners or box shadows are used on a page is a known issue introduced in the newest release builds of Google Chrome. Recent developmental builds, starting with 17.0.928.0 dev-m, have improved this situation somewhat but the problem persists.
•A fixed background image that does not need to be redrawn when scrolling but ironically this can cause Chrome to choke up especially if transparency will overlay it.
•Fixed position elements, or anything that touches z-indexes, can cause substantial slowdown
•Rendering and scrolling when any element is to not have a bottom border, for some strange reason, also causes slowdown. The border bug is most prominent on Windows platforms as of build 17.0.945.0 canary but does not appear on Mac variants. Twitter had this issue and tried to find out what was wrong for a while; sounds like one of the Google engineers committed a fix.
•There is a slowdown when using "blur" and some other functions
•Sometimes elements updated by javascript (such as post entry/editing) do not properly refresh onscreen


Some of these mistakes are "inherited" by Firefox as well, so using custom CSS can help there as well. IE and Opera are, ironically, your best bets for render speed.
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#3 TruYuri

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Posted 02 December 2011 - 12:49 AM

IE and Opera are, ironically, your best bets for render speed.

Just because Opera has a low market share doesn't mean it is supposed to be thrown into the same shitboat as IE. Example: http://lifehacker.co...ome-11-and-more

Opera is usually the head-to-head competitor to Chrome in a lot of tests out there. And things like HWA and naturally other improvements have been made since even those benchmarks way back in March.

[/fanboy]
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#4 Chronojam

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Posted 02 December 2011 - 02:29 AM

The "shitboat" that is IE has been outperforming other popular browsers like Firefox and Safari for a while now, including time-to-launch, javascript execution, page rendering, and it generally is not the first or second to fall during those annual hacking competitions. I'm disappointed in how Chrome and Firefox have been running into so many problems with recent versions. What it really comes down to for our purposes is that if IE can handle rounded corners, then I have no fucking idea why Chrome's shitting the bed. And not adequately supporting fixed background graphics? What is this, 1998?
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#5 Catalyst

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Posted 03 December 2011 - 05:10 PM

i like all 3, chrome has slowly gotten shit.
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#6 Sonarpulse

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Posted 04 December 2011 - 01:52 AM

Just as it's userbase supposedly supersedes Firefox. Pity...
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#7 Leonis

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Posted 07 December 2011 - 12:28 PM

The new Firefox seems to handle this quite well now!
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#8 Leo

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Posted 14 December 2011 - 06:44 AM

my samsung glxy S2 runs the the forum very smooth :D

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