TH2go (TripleHead2Go) - Jerky display

[autocadplease]

I recently purchased the Matrox TripleHead2Go running 3 x 22" widescreen lcds 3840x1024x32 in FSX Acceleration. The problem I have is that even though the frame rates are reasonable the display is jerky at times. Has anyone else experienced this? I have changed the display settings around and nothing seems to prevent this. I am using the latest video card drivers and Matrox drivers. Any suggestions welcome. Thank you in advance.

Computer:
Windows Vista 32
E6850 Duo Core
Geforce 8800 GTS 640mb
4GB Ram

[Holclo]

I am using TH2GO with PMDG737/FS9 and also experience jerkiness ,especially noticeable when taxiing. Framerates are resonable (not wonderful) but at times look like about 6 due to this jerking. So intersted in further replies.
Bill

[brianwilliamson]

Here some bits of information that we all should use :
http://forums.avsim.net/dcboard.php?az=show_mesg&forum=121&topic_id=436440&mesg_id=436619&page=
This chap knows what he is talking about and if you follow all of his threads I think most problems we have, will be answered. Here are a couple more threads That Nick N has written:
http://forums.avsim.net/dcboard.php?az=show_mesg&forum=197&topic_id=37203&mesg_id=37203&page=3
http://forums.avsim.net/dcboard.php?az=show_mesg&forum=121&topic_id=437378&mesg_id=437662&page=7
Hope this helps......................Brian W.

[Trevor Hale]

autocad,

I would also suggest you do a search for fsautostart. Someone recently posted a link for an updated version. run this before you run flightsim and that too will solve a lot of your jerky behavior.

Trev

[autocadplease]

Thank you all for your suggestions.
I use Alacritypc to start FSX and have done 75% of the tweaks mentioned. I was getting 45-50+ fps with sliders on high settings using one 22" monitor @ 1680x1050.
So, it seems to me that the TH2go is the bottle neck or there is some setting I have missed? The jerkiness occurs with TH2go whether my sliders are set high or low. It is like I could have a very high end machine and would still get the jerkiness. I will play around some more and post any findings.
Any TH2go users please post your approximate fps and if you get the jerky display. Thanks.
:cry:

[Matt Olieman]

Autocad, have you contacted Matrox regarding this issue. I'm curious what reason they have for this issue.

Here is the link to their support: http://www.matrox.com/graphics/en/corpo/support/home.php

Also, I want to confirm; you are using TripleHead2Go "digital," correct?

[autocadplease]

I have the digital version.
I think I have found the solution to my problem. I increased the [BUFFERPOOLS] value to 12000000 and I am not getting the jerky display. My previous value was 500000. Makes sense one monitor = 500000 x 3 monitor = 15000000 (but I heard not to go above 12000000). Anyways I'm smiling again:D:D:D

[Kennair]

That's great news autocad. As you've found, good frame rates don't necessarily also mean smooth video.

How have you found the 3 x 22" LCD's? I'm asking because this is the setup I had planned, however I'm still tossing up whether to use projectors or a combination of both. Any chance of pic or two?

Ken.

[autocadplease]

Kennair,

I will post some photos shortly.

In searching the net, due to my problem, I was reading about an updated th2go that is suppose to be announced mid 2008. From what I read, it will support 3x1680x1050 which the current th2go does not (only 3x1280x1024). Most wide screen lcd's native resolution are 1680x1050 so running them in 1280x1024 (which is a non wide screen resolution to begin with) does create some distortion.

[autocadplease]

Here is a quick photo and video (my camera takes terrible pictures and videos). The display is very good. Also, I was holding the camera when I was flying - so don't laugh! FPS was 40-50 during this clip.

<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/pHR9y4wgq-c"> </param> <embed src="http://www.youtube.com/v/pHR9y4wgq-c" type="application/x-shockwave-flash" width="425" height="350"> </embed> </object>

[warvet]

AutoCad that vid looks great, good frame rates for FSX nice work.:)

Hey Brian,
Seeing as we both have airbuses Im redoing my triple head mirror setup right now, can you send me in email tim.henry@shaw.ca the layout your using distances etc. Also the material your using for your screens and I remember they are painted grey right? Would MDF board painted work? Or just plain GypRoc building material. right now Im using a plastic screen material. Your setup looks great, Thanks in advance Brian :)

Tim

[AndyT]

Tim,

I have not heard it called GypRock in 30 years. Just how old are you? ;) :D
(For you youngin's, we used to call Drywall GypRock because it was made of Gypsum. Ask an old constructions guy what Gypsum Board is and he'll tell you 'Drywall'.)

[Kennair]

Hey Andy,

Here down under we still call it Gyprock. I don't think we've caught up with the 20th century yet! Used it quite a bit renovating my house.

Anyway back to the sim world. Autocad, that video is great, really gives the feel using those monitors and was exactly what I needed. Now to get hold of a DH2GO and make it 5 outside views and I'm set!!

Thanks,

Ken.

[Peter Dowson]

I have not heard it called GypRock in 30 years. Just how old are you? ;) :D
(For you youngin's, we used to call Drywall GypRock because it was made of Gypsum. Ask an old constructions guy what Gypsum Board is and he'll tell you 'Drywall'.)

Is that the same as what us Brits call Plasterboard?

[LATER]
Ah, almost. I see "Gyproc" is actually a trade name and applies to a number of Gypsum-based products:
http://www.british-gypsum.bpb.co.uk/products/plasterboard___accessories.aspx

Pete

[Matt Olieman]

Also the material your using for your screens and I remember they are painted grey right?
Tim

Tim, check out the following thread. Wonderful information regarding the screen, thanks to Brian.

http://www.mycockpit.org/forums/showthread.php?t=11754

Matt Olieman

[warvet]

AWESOME MATT!
Thank you Oh great Sensei and My Personal Mentor I should have known you'd have the exact answer I need as always! Now all I have to do is snatch the FCU from your hand LOL (hehehe) :):):)

Your Humble 340 Student
Tim :)