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Secondary Monitor Quality

I have an (WPF) application that plays a video and a scrolling text below on an LCD TV.

When I set the LCD TV as the primary monitor and monitor as secondary, it works perfectly. But when I set the LCD TV as the secondary monitory and the monitor as primary, the video lags and the scrolling text is not smooth.

Is there a way to "allot" more "video" resources for the secondary monitor?

I am using nvidia GT220 on windows 7 (but I also tested on win xp with the same problem)
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Thomasian
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Thomasian
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1 Solution
 
Rob KnightConsultantCommented:
Hi,

This could be a video overlay or similar problem when sending that video to the secondary monitor.

Have you set the refresh rate to be the same on both montiors?

Regards,


RobMobility.
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ThomasianAuthor Commented:
Wow! Changing the refresh rate significantly improves it! I have been working at this for hours without any improvement.

Thanks!


Can you elaborate more about the video overlay?
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Rob KnightConsultantCommented:
Hi,

I think WPF uses directdraw or directplay - you might be able to tweak that but I have seen issues where an application which uses DirectDraw, for example, plays less well on a second display.

You might want to check that Video Acceleration is being enabled as well - most if not all modern video cards accelerate video to offload the work from the CPU.

You could try disabling Aero as well - that consumes hardware resources especially on less powerful video cards such as integrated/lower end.

You can try tweaking refresh rates a bit (59 Hz, 60 Hz etc) but it sounds as if you have made some progress.

Regards,


RobMobility.
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ThomasianAuthor Commented:
Thanks!
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