Hi, I have a rather perplexing problem perhaps someone will be able to help..

I will post specs in a min first my troubles.. In all my games with S3D Enabled I can get no more then 38 FPS. I just tested it in Flaming Cliffs 2 and Flight sim 2004/VRS F-18, also in Lord of the Rings ..38 FPS Steady, I also tested it in Rise of flight same FPS with S3D enabled. but when I turn the S3D OFF the Frames climb to over 60 some games get over 100FPS..

What would cause the games to be limited to 38FPS with S3D Enabled. I even have VSync and Frame limiters off in all games..

here are my specs:

1. Intel i5 2500K 3.30ghz
2. 12 gb RAM Mushkin DDR3
3. 2 PNY 470GTX in SLI. 275.33 drivers
4. Matrox TH2Go use this and not nVidia surround for a special reason..
5. Rocketfish 7.1 sound card..
6. 3 DLP Projectors no monitors
7. nVidia 3D Vision kit wireless
8. Asus P8Z68 Pro mobo..Intel chipset
9. Win 7 64 bit

I have all current updates and drivers..

If you need more info that I may have forgotten please let me know..this is wierd it seems others are getting normal FPS in their games and not being limited like this??

Your projectors are set to 75hz refresh rather than 120hz? That's the only reason they should lock at half that rate in S3D; (37.5, or 38).

Sounds like its due to the refresh as NumberSix said. It looks like the max refresh on that projector is 85Hz, so the most you could get in 3D is 43Hz. Sounds like you are running at 75Hz, though.

OK I can buy that but how come when NOT in S3D The FPS Jump up and are not limited then?? Perhaps a S3D DRiver related thing??

Yes I can't run @ 85 hz you get wierd artifacts but I will try and see if the FPS Do Jump which according to you guys it should asbit a low increase I just want to test his theory

Well I just ran @85hz and no increase in FPS w/S3D Enabled.. but as soon as I turn S3D OFF the FPS jumped to 72FPS..

Wierd, but I can't see the refresh rate as the limiting factor.. not saying that it is not I just dont see it??

Perhaps there's an article somewhere that explains this??

Also, I posted this on a few forums and some other poster claims it might be the TH2Go and it limits the FPS?? Im lost..

?Why Can't nVidia make 3D Vision work with any model projector that could work like mine.. is it that they do NOT wanna support such a broad field or are they trying to make some proprietary stuff..

Well, for example, with a 120Hz monitor you are limited to 60FPS when in 3D. This is because the monitor is rendering at 120Hz, but for both eyes. So each eye only gets 60Hz or 60FPS. This is a limitation of active shutter glasses technology and will be the same with any type of glasses or display. You always get half the refresh rate in 3D. So with a 60Hz display (ie CRT, etc.) you would only get 30Hz/30FPS per eye. 3D mode also is always used with vertical sync, it doesn't matter if you enable it or not. Otherwise you would get half of one eye in the other eye and major headaches. Playing in 2D you can disable VSync and get some crazy 200FPS that you have no way of actually seeing. You are always limited by whatever the refresh is you are running.

Nvidia, unfortunately, are running their 3D division as a serious business and companies have to pay money to license their technology. So every monitor or projector that is "certified" by Nvidia basically means the display manufacturer had to pay to license that technology. So even though there are many devices technically capable of 3D, they won't work with Nvidia 3D Vision unless they cut a deal with Nvidia. Pretty annoying, but I can't blame them for wanting to see a return on this.

Well that stinks.. looks like I will be saving for some new projectors..

but how come when I switched to 85hz the FPS Still stayed at 38? Shouldnt it of went to 42-43FPS??

I was thinking of going with these Projectors:


http://www.amazon.com/H5360-2500-Lumens ... =de_a_smtd

One more thing The CRT Monitors only requirement is that it does 100hz they do not have to be certified?? They could put in an option to use CRT for the NON Certified stuff.. I got mine working so it is possible..

That Acer H5360 is supposed to be probably the best for the price. I keep wanting one, but don't really have the space in my room.

CRT monitors are treated as "generic" by Nvidia since they are legacy at this point and no one is really making them anymore. I think they just need to be able to do 100Hz+ and then they will work.

ya I will look at the sopecs on that one close. I was looking at another supposedly 120hz projector but in the manual stated it only did 120hz at 800x600??

ya that is my point exactly NOBODY is marketing them well the DLP Projector I had was for the old school setups and they are not selling them anymore either been discontinued. I would have rather used nVi8dias Surround instead of using the matrox whick limits my rez I can use but makes the 3D work

I am like inbetween getting new projectors it is just that these are still working and is just a waste to just get rid of them because they still work.. I am from the old school keep it if it still works. I dont go out and gett the latest and greates every 3 months

I just would have liked if they made an option for older Stuff that could possibly work or just make it use the CRT as a Generic device vs detecting if it is 3D compatible.. well these devices are 3D compatible just would have been nice if there was an option to get them work.

Im sure there are a few with these older 3D Projectors that where either forced to upgrade or like me work out a solution somehow..

Dont get me wrong I like upgrading stuff too but my addage is if it aint broke and it works why replace it..just to say I have the latest and greatest I dont buy into that..

Yeah, it kinda sucks when you have perfectly good hardware that is no longer supported. That is why I sold my VR920, it was cool but without support so who cares. Its too bad Nvidia couldn't have found a different monetization scheme for 3D Vision. I would have gladly paid $50 or more for a driver that had all the old outputs Nvidia used to support. I am not sure why they don't capitalize on this.

ya I would have gladly payed an extra 50 bucks for extra support for the older hardware..

Well I will enjoy these current projectors for some time to come I guess as long as they make bulb for them I will be a happy camper..

If I do go the new Projector route I will need to get a new screen as well. this current screen is a 4:3 Ratio and the new Projectors are 16:9 ratio..

Im just glad I can once again game is S3D that is really all that matters.. Whish more people would get into it. it really is the next step into Virtual reality..

I never viewed a VR920 like that how did it work, well or was difficult seeing the screen??, was it a cool gadget?? IT was also a S3D Capable correct??

Yeah, people are really missing out on 3D. I don't understand how anyone can honestly think its a gimmick if they saw a proper setup with a supported game. I really hope it takes off this time, 3D is so close to being mainstream yet there is still so much unnecessary hate.

VR920 was cool for what it was. No ghosting, very nice 3D effect. Only problem was that the virtual screen size looked small, even compared to a monitor (forget about projectors). I plan on buying the 1200VR when it comes out next month, which is the new widescreen version with better software support (SBS compatible). The coolest part is that there is a headtracker, which works well especially for flight and racing sims. It does really bring you into the game, and just even closer to true VR. The technology still has some ways to go before it can go mainstream, but I like to support the companies innovating in this field.

Well I can say that LOTRO in S3D Is phenomenol. It is almost like I had transported to middle earth..

Also I had WoW and that too looked very sweet..Rise of flight is an other good one. it is a WWI Simulator and with the triple screen and S3D WOW So Cool..

GTR2 Is another cool one almost like driving the real cars at the track..