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10.5: Fix slow full-screen Flash movies in 10.5.7 Apps
After updating to 10.5.7, I found that Flash movie players in web pages perform poorly in full-screen mode. On my MacBook 2.4GHz Intel Core 2 Duo, the only way to get the old performance back was to disable hardware acceleration in the Adobe Flash Player.

To disable hardware acceleration, Control-click on the playing movie and choose Settings from the pop-up menu. On the first tab (Display), uncheck 'Enable hardware acceleration.'

[robg adds: On my Mac Pro running 10.5.7, I don't see any difference in playback speed with hardware acceleration enabled or disabled. If you have a MacBook and can test this hint, please post your results in the comments.]
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10.5: Fix slow full-screen Flash movies in 10.5.7 | 15 comments | Create New Account
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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: dronkert on May 26, '09 08:19:42AM

In my experience, the Safari 4 beta made the difference. Ventilators now often whirling with embedded Flash movies, certainly when using the full screen option. Did not experience that with Safari 3 (and still not with Quicktime movies).



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: Unsoluble on May 26, '09 08:38:26AM
"Ventilators now often whirling with embedded Flash movies"

Umm... What?

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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: PCheese on May 26, '09 09:00:31AM

He/she means "fans".



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: sayler on May 26, '09 08:43:35AM
For me (Firefox 3.5 beta4 + Flash 10,0,12,36) fullscreen HD Youtube videos (eg http://www.youtube.com/watch?v=U7Ayk9G7-sc&feature=popular) are (much) smoother without hardware acceleration but use somewhat more CPU.

I have experimented on other Flash sites and have found sometimes more substantial improvements using hardware accel..

Late 2008 Macbook 9400M video, 4G memory, 1440x900 external DVI display (AC power, no builtin LCD used)



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: BlaatMekker on May 26, '09 10:18:59AM

I only have some initial slowdown problems when I go fullscreen. Nothing mayor, but still annoying.



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: bcometa on May 26, '09 10:35:42AM

on my macbook 2.4 c2d (4gb ram), i noticed no difference w/ full screen hd youtube videos.



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: sith250 on May 26, '09 11:44:29AM

I've noticed this problem BEFORE 10.5.7, so I don't think it's related to OSX. I blame Adobe and their crappy Mac support over the recent years. All the years of Mac users buying Adobe software and they thank us by overloading our CPUs and giving poor performance compared to Windows? Shame on you Adobe!

At any rate, I am VERY glad to have stumbled upon this hint. I am happy to report that my Macbook Air plays full screen flash videos without choking when I unchecked tat box. It was always annoying when I can play an HD quicktime movie full screen nice and smooth, but a crappy flash video optimized for the web would choke in full screen. Thanks MacOS X Hints. :)



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: jtalle on May 26, '09 06:08:55PM

Dang, this fixed my lags and jerkiness, too, on my G5 Quad with 10.5.7.

THANKS!



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: mchagers on May 26, '09 12:38:27PM

Don't see any difference here on a MacBookPro w. Safari 4 public Beta



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: tpressman on May 27, '09 07:57:37AM

On my revA BlackBook Core Duo... Thanks. I used to get a 10 - 30 second frozen screen with beachball while the audio continued to run prior to turning hardware acceleration off - now it works like butter.



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: cheesekeeper on May 28, '09 04:23:41PM

Another trick for running full-screen flash movies is to lower the resolution of your display.
I like to watch Hulu on my 30" Cinema HD display from across the room sometimes. In native resolution, the video is choppy and horrible. If I lower it, it is much smoother, and the video looks the same from across the room.



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: punka on May 29, '09 11:56:24AM

This helped on my Dual 1GHz MDD G4. Even though my video card supports QE & CI, flash videos now play well enough to enjoy. Strangely enough, this computer is capable of playing 720p HD QuickTime videos like a hot knife through butter, but chokes to death on crappy flash. The problem has been there for much longer than 10.5.7.

To reiterate what everyone else is saying, it's really sad to see how badly flash has destroyed video on the internet. It really is a regression in technologies.



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: Maciej Mogilany on Jun 21, '09 03:24:30AM
Flash is wrongly implemented on Mac. It don't work well with Quartz. For me it's one of biggest drawback on mac especially on PowerPC. I had choppy youtube videos on my G4 1.33 there are my tips to get it playable. Note that Intel mac are powerful enough and you may not notice as much difference as on PowerPC.

- get last flash - I have 10.0.22.87 version and it geve me big speed improvements specially in full screen

- disable beamsync - I get huge boost with beamsync disabled my guess is that flash must wait for another screen sync what make it choppy specially in acceleration mode. It's good try for those suffering symptoms as in article. This shouldn't happened with modern program. Theoretically there can by drawback. Programs that frequently update their UI (more times than screen refresh) may take more cpu power. I noticed more responsible apps with beamsync disabled.

- on choppy videos wait them to load completely - It must be some bug, speed in my case is doubled when video are loaded completely

- watch videos in fullscreen - I now that in article this was a problem but I encourage you to try first two tips and check again with accel enabled you may be surprised

- try firefox or opera they better handle flash plugin - this was in hint some time ago. With safari 4 difference is almost not noticeable. In fullscreen speed is this same in all browsers.

- best of all are greasemonkey/greasekit script that allow you to play mp4, and mp4 HD version of youtube videos, but no full screen :(
http://userscripts.org/scripts/show/38074


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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: levity on Jul 14, '09 09:37:55PM

This DEFINITELY fixed my problem. On my Black MacBook Core 2 Duo, full-screening Flash movies to my 1920x1200 external monitor were unwatchably jerky. Now they work fine.



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10.5: Fix slow full-screen Flash movies in 10.5.7
Authored by: Nago on Dec 29, '09 02:20:50AM

Awesome!
I was having 2 sec lag when going fullscreen with Flash videos...
Running brand new MB late 2009, up-to-date

Worked perfectly! It's quickness now, thax!!!



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