Delta Virtual Airlines Water Cooler - A question about video performance?

Delta Virtual Airlines Water Cooler | PC Support | A question about video performance?

DVA4788
Chief Pilot, L-1011-100
OLP

Joined on August 02 2007
50 State Club
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"Fly it like a Samsonite Gorilla!!"
Wichita, KS

471 legs, 884.0 hours
220 legs, 398.1 hours online
459 legs, 859.5 hours ACARS
2 legs, 5.2 hours event

Posted onPost created on January 27 2014 04:35 ET by Jon Michael Prenovost

With the vast majority of us operating on 60Hz refresh rate monitors, why would anyone want to, or otherwise feel the need, to clock over 60fps on their rig? Is there any practical performance benefit in doing so?

Jon Michael Prenovost (DVA4788)

AFV744
Senior Captain, B747-400
OLP

Joined on April 27 2012
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Wellington, NS Canada

2,468 legs, 10,374.5 hours
752 legs, 1,426.3 hours online
2,468 legs, 10,374.5 hours ACARS
238 legs, 466.0 hours event
3,528 legs, 15,773.5 hours total

Posted onPost created on January 27 2014 10:56 ET by Bill Gardiner

I don't believe there is any performance benefit. I recently changed my FSX settings from limiting frames to 30FPS to Unlimited FPS so now I'll go over 60fps on occasion but not by design. If I could sit on 60fps I'd be quite happy. smile

Bill Gardiner

Senior Captain, B747-400

DVA8502
Captain, B757-200

Joined on April 13 2010
Double Century Club

"MOCHA HAGTDI."
Folkston, GA

251 legs, 575.3 hours
65 legs, 139.7 hours online
241 legs, 558.8 hours ACARS
2 legs, 4.6 hours event

Posted onPost created on January 27 2014 21:07 ET by Timothy Thomas

for FSX no theres no benefit.

for gamming on the other hand. 140Hz. is the best. I plan on buying a 140Hz Monitor soon.

Timothy Thomas

Captain, B757-200

DVA11781
Captain, MD-11

Joined on October 03 2013
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Northeastern United States

Posted onPost created on January 27 2014 21:32 ET by Joe Cappelo

I have mine limited to 50fps, but it usually goes over. Avg. of 20fps on ground with scenery like Aerosofts or FSDT/FT, 30-35 on climb out, 35-55 on cruise, 100+ over water, 60 on avg. if I dont limit it. I do have a 140Hz monitor, really nice performance with it.

Joe Cappelo (DVA11781)

DVA9716
First Officer, A330-300

Joined on April 26 2011
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Killeen, TX USA

154 legs, 324.0 hours
102 legs, 218.1 hours online
153 legs, 321.7 hours ACARS
4 legs, 8.9 hours event

Posted onPost created on January 28 2014 16:12 ET by Kenneth Dickerson

The human brain can only percieve 28 to 32 FPS and below. Anything above and it looks like a movie to our brain. I set my FPS at 35 and it moves flawlessly.

Kenneth Dickerson

First Officer, A330-300

Posted onPost created on January 28 2014 22:55 ET by Jon Michael Prenovost

Kenneth Dickerson wrote:

The human brain can only percieve 28 to 32 FPS and below. Anything above and it looks like a movie to our brain. I set my FPS at 35 and it moves flawlessly.

Kenneth, that is actually incorrect, it has been medically proven that the human eye in concert with the human brain can actually process at nearly 1,000 fps, while consciously a person can perceive up to about 170fps. The commonly believed limit of around 24-30 is an urban legend, which owes its roots to Hollywood trying to keep their overhead down, back in the early years of motion pictures, by way of spending as little money as possible to get the desired effect. The lowest possible frame rate which still "conveys motion" into our brains saved Hollywood allot of money, in years past, by limiting the total amount of physical film consumed to produce a movie.

Ironically enough it was a medical team from the USAF that did the pioneering research into this subject and determined the true performance of the human eye.

Jon Michael Prenovost (DVA4788)

Posted onPost created on January 29 2014 14:09 ET by Kenneth Dickerson

When I first started flying the Apache in 1986, I had to sit in many a class room for hours in concerning visual acuity, perception, latency, and many other things I have since not really thought about. The Apache was the 2nd generation IR system, that was the 1st gen attack helicopter system. So before the government would allow me to strap a 16 million dollar helicopter to my ass they wanted me to completely understand what and how the system would effect me, especially when we would fly at night, no illum, at 100 ft or lover and above 120 knots with one eye. The basics of the human eye is that at minimum your eyes can see 20fps rate at minimum that we humans perceive animation, but you are right, the human brain is far more able to distinguish 60fps and above. Again 20fps is the base line for fluid movie animation, but video use, where the users need to react quickly to stimuli shown on the screen, faster frame rates like 60fps provide better latency, since each frame is refreshed every 1/60 seconds instead of 1/20 seconds. I have not seen the study where the human brain can process 1000 fps, above 60 fps it is not the conscious part of the brain that can see, but the subconcious. Between 30-60 the eye does not work as hard and blurieness is not as great but there comes a point when their is an overkill of information that is useless. The Apache first gen ran at 400 hz. This was really great, but take a look at studies of too high of frame rates as these are related to siezures. We had one pilot that after an hour of flying the apache under the system he would zone for just a few seconds, if he was not talking or actively doing something. It was not until one night he almost ran into major power lines that a study was conducted on him and found that he was suceptable to micro siezure brought on by a 390 to 410 hz range that the apache had. So unless you want to have a set of eye clamps hold your eye lids open and 1000 fps visual stimulation is pulsed into your eye, I would say anything above 40 FPS will do just fine.

Kenneth Dickerson

First Officer, A330-300

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