Question about in-game FPS and 3D vision...
I use a checkerboard DLP and GTX295 for 3D gaming.

I noticed that a few games are giving me 35-50 frames per second and are somewhat choppy in 3D. I really don't understand why a game running at 30+ frames pr second is not running somewhat smooth...unless the frame rate I am getting is total number of frames for each eye, making the true frame rate actually half of that number.

Does anyone know what a program like FRAPS measures when showing you the frame rate in the top corner? Is it the total number of frames that both eyes see? Or is it individual frame rate for each eye?

It almost seems like I lose 1/2 of the frame rate when I go in to 3D mode, and then another 1/2 is lost when rendering the image for each eye...
I use a checkerboard DLP and GTX295 for 3D gaming.



I noticed that a few games are giving me 35-50 frames per second and are somewhat choppy in 3D. I really don't understand why a game running at 30+ frames pr second is not running somewhat smooth...unless the frame rate I am getting is total number of frames for each eye, making the true frame rate actually half of that number.



Does anyone know what a program like FRAPS measures when showing you the frame rate in the top corner? Is it the total number of frames that both eyes see? Or is it individual frame rate for each eye?



It almost seems like I lose 1/2 of the frame rate when I go in to 3D mode, and then another 1/2 is lost when rendering the image for each eye...

#1
Posted 06/25/2010 05:49 PM   
[quote name='disolitude' post='1077989' date='Jun 25 2010, 06:49 PM']I use a checkerboard DLP and GTX295 for 3D gaming.

I noticed that a few games are giving me 35-50 frames per second and are somewhat choppy in 3D. I really don't understand why a game running at 30+ frames pr second is not running somewhat smooth...unless the frame rate I am getting is total number of frames for each eye, making the true frame rate actually half of that number.

Does anyone know what a program like FRAPS measures when showing you the frame rate in the top corner? Is it the total number of frames that both eyes see? Or is it individual frame rate for each eye?

It almost seems like I lose 1/2 of the frame rate when I go in to 3D mode, and then another 1/2 is lost when rendering the image for each eye...[/quote]


it might be something called "micro stuttering" and SLI suffers it, your GTX295 has SLI enabled by default obviously. I notice it too , my next card will be the fastest single GPU available, even though some say its extent is reduced in 400 series ?

I don think I'd count on fix 60fps all the time I'll just get a single card...
[quote]. With Alternate frame rendering (AFR), the first GPU calculates the first frame while the other calculates the second one and so on. Apparently a tool is lacking to provide these frames with the appropriate harmony so that they are displayed regularly. Upcoming graphics driver could provide the necessary balancing.[/quote]

[url="http://www.overclockers.com/micro-stutter-the-dark-secret-of-sli-and-crossfire/"]http://www.overclockers.com/micro-stutter-...-and-crossfire/[/url]

etc etc. ton of stuff on the web. Even 3-way SLI looks much better than two way sli, so thats an option too, but im not sure.
[quote name='disolitude' post='1077989' date='Jun 25 2010, 06:49 PM']I use a checkerboard DLP and GTX295 for 3D gaming.



I noticed that a few games are giving me 35-50 frames per second and are somewhat choppy in 3D. I really don't understand why a game running at 30+ frames pr second is not running somewhat smooth...unless the frame rate I am getting is total number of frames for each eye, making the true frame rate actually half of that number.



Does anyone know what a program like FRAPS measures when showing you the frame rate in the top corner? Is it the total number of frames that both eyes see? Or is it individual frame rate for each eye?



It almost seems like I lose 1/2 of the frame rate when I go in to 3D mode, and then another 1/2 is lost when rendering the image for each eye...





it might be something called "micro stuttering" and SLI suffers it, your GTX295 has SLI enabled by default obviously. I notice it too , my next card will be the fastest single GPU available, even though some say its extent is reduced in 400 series ?



I don think I'd count on fix 60fps all the time I'll just get a single card...

. With Alternate frame rendering (AFR), the first GPU calculates the first frame while the other calculates the second one and so on. Apparently a tool is lacking to provide these frames with the appropriate harmony so that they are displayed regularly. Upcoming graphics driver could provide the necessary balancing.




http://www.overclockers.com/micro-stutter-...-and-crossfire/



etc etc. ton of stuff on the web. Even 3-way SLI looks much better than two way sli, so thats an option too, but im not sure.

#2
Posted 06/25/2010 08:07 PM   
yes possibly micro-stuttering. my old 295's suffered from this quite a bit- especially in 3d. you are really pushing the cards and the drivers. Try lowering the visual quality to see if the games smooth out- especially AA. one advantage of femi SLI is less micro-stuttering- and higher minimum frame rate. I still see it sometimes- but it is less than the older cards.

Try disabling sli in the control panel. you will need to lower visual quality but you will see if your system is any smoother with a single gpu. you can do this may ways- in the NV control panel with the global settings, the sli settings tabs, or in device manager by manually disabling a core (might be buggy if you do not disable sli in the NV control panel- but it might work out ok). The NV control panel does not always work for me (depends on driver version or my own user error) so verify GPU usage with third party app like EVGA precision.

also try disabling all non critical programs in device manager. maybe something is using up system resources. if you have windows 7 you can also try disabling all non critical system services and rebooting. basically this is two ways to get the same result.

you can also try the program Nhancer- depending on what version of drivers you have (256 drivers are not yet supported). I have had luck smoothing out games that had poor GPU usage with older drivers.

now, im not making any accusations just a suggestion, but dont run pirated games- they often come modified and include viruses and malware that will choke you pc eventually.
yes possibly micro-stuttering. my old 295's suffered from this quite a bit- especially in 3d. you are really pushing the cards and the drivers. Try lowering the visual quality to see if the games smooth out- especially AA. one advantage of femi SLI is less micro-stuttering- and higher minimum frame rate. I still see it sometimes- but it is less than the older cards.



Try disabling sli in the control panel. you will need to lower visual quality but you will see if your system is any smoother with a single gpu. you can do this may ways- in the NV control panel with the global settings, the sli settings tabs, or in device manager by manually disabling a core (might be buggy if you do not disable sli in the NV control panel- but it might work out ok). The NV control panel does not always work for me (depends on driver version or my own user error) so verify GPU usage with third party app like EVGA precision.



also try disabling all non critical programs in device manager. maybe something is using up system resources. if you have windows 7 you can also try disabling all non critical system services and rebooting. basically this is two ways to get the same result.



you can also try the program Nhancer- depending on what version of drivers you have (256 drivers are not yet supported). I have had luck smoothing out games that had poor GPU usage with older drivers.



now, im not making any accusations just a suggestion, but dont run pirated games- they often come modified and include viruses and malware that will choke you pc eventually.

System:

Intel I7 920 overclocked to 4ghz

Asus Rampage Extreme II

2 Ge-force 480 in SLI

GTX 295 PhysX Card

12gb ddr3 2000mhz ram

Intel SSD in RAID 0

BR RW

1000w Sony surround sound

NVIDIA 3D Vision



3d displays tested:



Mitsubishi 65" DLP 3d HDTV (good old 1080p checkerboard since 2007!!!)

Panasonic VT25 (nice 2d but I returned it due to cross talk)

Acer H5360 720p on 130" screen (the best 3d)

23" Acer LCD monitor (horrible cross talk- sold it)

Samsung 65D8000

#3
Posted 06/25/2010 08:24 PM   
Thanks guys. Yeah it sounds like it might be it as it happens on very high end games (Crysis, Metro).

I'll deal with it for now as all I have to do is lower the games details and get better frame rate...

ITs kind of discouraging though, expecially with 3D surround tech on the horizon pretty much requiring SLI to work.
Thanks guys. Yeah it sounds like it might be it as it happens on very high end games (Crysis, Metro).



I'll deal with it for now as all I have to do is lower the games details and get better frame rate...



ITs kind of discouraging though, expecially with 3D surround tech on the horizon pretty much requiring SLI to work.

#4
Posted 06/25/2010 10:13 PM   
it has allot to do with the 295 not having enough memory for high resolution high visual quality 3d. dual 285's suffer from stuttering less. 480 sli does not really stutter- it just slows down when the card is overwhelmed. I hope this makes sense.

But dont let that stop you. the 295 is a great card. you just have to tune your system right and know the cards limits. i hope this helped.
it has allot to do with the 295 not having enough memory for high resolution high visual quality 3d. dual 285's suffer from stuttering less. 480 sli does not really stutter- it just slows down when the card is overwhelmed. I hope this makes sense.



But dont let that stop you. the 295 is a great card. you just have to tune your system right and know the cards limits. i hope this helped.

System:

Intel I7 920 overclocked to 4ghz

Asus Rampage Extreme II

2 Ge-force 480 in SLI

GTX 295 PhysX Card

12gb ddr3 2000mhz ram

Intel SSD in RAID 0

BR RW

1000w Sony surround sound

NVIDIA 3D Vision



3d displays tested:



Mitsubishi 65" DLP 3d HDTV (good old 1080p checkerboard since 2007!!!)

Panasonic VT25 (nice 2d but I returned it due to cross talk)

Acer H5360 720p on 130" screen (the best 3d)

23" Acer LCD monitor (horrible cross talk- sold it)

Samsung 65D8000

#5
Posted 06/25/2010 10:24 PM   
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