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Reduce lag when presenting Keynote on external displays Apps
Not too sure if many realise this, but Keynote animations, transitions and video playback may suffer some lag and "jerks" when presenting on external monitors or projectors. This is assuming that the presentation is on the external display, and the primary display is displaying the "presenter's display." Somehow, this seems to affect the portables more than the desktops.

The solution to this problem is to not display the Time and Timer on the Presenter's Display. This will enable smooth transitions, animations, and playback of videos in Keynote during presentations.
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Reduce lag when presenting Keynote on external displays | 5 comments | Create New Account
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Reduce lag when presenting Keynote on external displays
Authored by: sdingle on Apr 12, '07 09:35:44AM

The reason that sometimes presentations don't display well is because as soon as you plug in an external monitor, the video ram is cut in half. As noted in the hint, you're going to notice this a lot more on laptops compared to desktops due to less video ram. This hint does work by the way! Thanks!



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Reduce lag when presenting Keynote on external displays
Authored by: brucio on Apr 12, '07 12:04:52PM

I suspect a lot of desktop machines use separate video cards for presenter and external display.



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Reduce lag when presenting Keynote on external displays
Authored by: Scripter12 on Apr 12, '07 07:05:51PM

I do almost weekly presentations to groups with a 17" MBP (Intel core duo, Radeon X1600, 256MB VRAM, 2GB RAM) connected to a projector and have not seen this. I don't use a lot of builds but I use a lot of simple transitions and one large QT movie.



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Reduce lag when presenting Keynote on external displays
Authored by: iunspoken on Apr 13, '07 10:44:44AM

that would probably be because you're having almost double the RAM that i (and most other MacBook/MacBook Pro users have)
My machine currently only has 1GB RAM and X1600 128MB VRAM...
yups



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Reduce lag when presenting Keynote on external displays
Authored by: masjones on Apr 13, '07 04:50:37PM

I use presentations everyday with my 7th grade science class. I have an OLD PB 12" G4 (300 something RAM) I do see this problem occasionally, mainly the first time the presentation is run....



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