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PostPosted: Fri Dec 16, 2016 12:07 pm 
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Location: Pennsylvania, USA
I saw a comment today which surprised me. Someone asserted the AVS is going to be laggy on an 1080p tv because it outputs 720p. I have only a very high level, layman's understanding of television formats and electronics. My assumption was that if you have a native hdmi signal, which is digital, any fully hdmi compliant TV should not perform any expensive upscaling on a digital signal it should be able to just display it, on the fly. I do understand an analog signal has to go through an expensive upscaling process and the best you can do is something like the framemeister, which is specialized for a 240p image.

So the question is: Should AVS lag on a 1080p tv, due to its 720 signal?


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PostPosted: Fri Dec 16, 2016 12:11 pm 
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A 720p digital signal still needs to be upscaled for display on a 1080p panel. A good TV in "game mode" will do this with less than a frame of lag.


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PostPosted: Fri Dec 16, 2016 12:14 pm 
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Location: Nacogdoches, Texas
Is it possible to just have the TV display it pixel per pixel with black borders around it? I've never looked that deep into menu on mine.


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PostPosted: Fri Dec 16, 2016 12:14 pm 
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I'm not 100% sure but I think that post-processing features are a much bigger source of lag. I think upscaling from 720p to 1080p is pretty minimal...roughly 1/2 a frame on the good TV's.

Here are some measurements regarding the AVS lag.

http://nintendoage.com/forum/messagevie ... did=166023


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PostPosted: Fri Dec 16, 2016 10:12 pm 
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Location: Wisconsin
The answer depends on the TV.

Does it have a game mode?
Does it have a "just scan" mode?
Is there an option to turn off motion smoothing?

If not, then it probably is consistently lagging 3-5 half-frames.
A $250 Wally World TV isn't going to have these options, unless it's an accident.

I'm not trying to be an elitist, but when I personally buy monitors and TV's, to get the features I need as a gamer I have to do research and get them custom delivered.


The way HDMI works is that any TV mode is going to stretch. However, there are some PC monitor modes that a video output chip could request that would cause a black border around the active image, but it's hit or miss as far as being supported by the TV.


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