Yet Another Track IR stuttering when panning thread

[The_Nephilim]

Hnmmm, Do you have VSync enabled anywhere in nvidia CP or ingame? if yes try and turn it off. have you tried a fram cap besides VSync ?

[wolfitoXtreme]

2 minutes ago, The_Nephilim said:

Hnmmm, Do you have VSync enabled anywhere in nvidia CP or ingame? if yes try and turn it off. have you tried a fram cap besides VSync ?

Nvidia both things, tried on/off, can give it another try though.

[wolfitoXtreme]

11 hours ago, Czar said:

Have you overclocked your CPU or RAM...or GPU? If so, undo it all and try DCS again.

I had this problem with a pristine system, fresh windows installation too, I did try Expo and lowering ram speeds after that, done a couple of "recommended" things with the processor, no gain no lose in this matter, as I said it was behaving like that from scratch otherwise I would never have messed with those things, other than the trackIr panning stutters I see no other problem with the system, no blue screens, nothing I did run some Cinebench and other benchmarkings, did some basic memory test, latencymon, nothing came out, I can clear the CMOS but I lean towards to run some stability tests with OCCT before doing so and perhaps some disk as well, I wish knowing if something is actually broken was easier than this.

[Czar]

13 hours ago, wolfitoXtreme said:

I do not have means to check the mouse polling rate, its a basic Logitech M90 mouse, I got this from a web app that allegedly measures that:

I have the same mouse as a backup stored in a closet . I tested it in DCS a while ago, it is flawless. It is a very smooth mouse over a proper surface. 
Some sites says it has a polling rate of just 125hz. https://www.flipkart.com/logitech-m90-corded-mouse-wired-ambidextrous-optical-gaming/p/itm9f5e3227d7082

It is actually sealed in a box, the previous one I gave it to someone else:

I opened it up and tested on this site : https://cpstest.org/polling-rate-test/

I gave me a max of just 145hz of polling rate while moving it around.

It might be not too helpful as I run a setup at 40 fps locked for personal reason but I ran your P-51 track and found zero stutter when your POV moved around. I wanted to share because I recorded it and uploaded it at a good quality for you to see and compare. Another person can quickly confirm if your track is smooth at high refresh rates.

Something seems to be related to rendering on your PC instead of input.

[wolfitoXtreme]

2 hours ago, Czar said:

I gave me a max of just 145hz of polling rate while moving it around.

Tnx, I just did the same, mine got 130hz max, dunno, is it normal the readings vary for that, like, is not steady, from some value up to, but not the same even the mouse is moving constantly?
 

2 hours ago, Czar said:

It might be not too helpful as I run a setup at 40 fps locked for personal reason but I ran your P-51 track and found zero stutter when your POV moved around. I wanted to share because I recorded it and uploaded it at a good quality for you to see and compare. Another person can quickly confirm if your track is smooth at high refresh rates.

Something seems to be related to rendering on your PC instead of input.

No worries... I appreciate a lot you doing this this, thanks

Edited Tuesday at 02:25 PM by wolfitoXtreme

[Czar]

26 minutes ago, wolfitoXtreme said:

Tnx, I just did the same, mine got 120hz max, dunno, is it normal the readings vary for that?

Highly depends on the method to take the readings. See the website I linked for. The method you took was maybe with averaged values.

I yanked it hard to get the maximum of 145hz. Usually it read on the 100s to 110s hz.

Either way I don't think it is the mouse.

[wolfitoXtreme]

On 11/25/2025 at 3:50 PM, Czar said:

Highly depends on the method to take the readings. See the website I linked for. The method you took was maybe with averaged values.

I yanked it hard to get the maximum of 145hz. Usually it read on the 100s to 110s hz.

Either way I don't think it is the mouse.

yup, is not the mouse, I just checked panning in DCS with the numpad keys slowing the view with "left ctrl+]", did not know that existed, and it is smooth as butter... something is happening with TrackIR, I tried different USB ports, same thing, does not makes sense, perhaps is time to move to VR, dunno.

[Lange_666]

I just checked your (latest) DCS log file again.
I see FPS is set to 300 and VSync is OFF.
You can leave the FPS at 300 in game (but since your monitor has a max refresh of 180, i would set that to 180) and set VSync to ON and set an "FPS cap" in the nVidia Control Panel (NCC) to 120 if you are sure you can maintain that all the way through or 60 if not.
Also, did you set up G-Sync in the NCC? If yes, turn that off. 
Next, you can play around with the monitors refresh rate if you want, i have a 144Hz capable monitor but i set it to 120Hz to be at the same poll rate as TrackIR. I also set an FPS cap of 60 so that's exactly half the refresh rate of my monitor which gives 120-60-40-30 if divided by 2-3-4, otherwise it would be 144-72-36-18 which doesn't match the poll rate of the TrackIR. In your case with a monitor at 180 this would be 180-90-45. Worth a shot.

And please record a video while panning so we can see what you see.

Options:
Do you have a webcam lying around? You can try that with Opentrack instead of TrackIR.
There are also options to use a cell phone for tracking, just roam the internet for info. 

[Hiob]

I don’t know if this is still a thing, haven’t done any testing in a long time, but back in the day DCS freaked out when you set and actually hit fps close to 300.

But either way, I would also recommend enforcing FPS limits below the DCS setting by the GPU driver or even better by Afterburner/Riva.

[Czar]

12 hours ago, wolfitoXtreme said:

yup, is not the mouse, I just checked panning in DCS with the numpad keys slowing the view with "left ctrl+]", did not know that existed, and it is smooth as butter... something is happening with TrackIR, I tried different USB ports, same thing, does not makes sense, perhaps is time to move to VR, dunno.

Try keeping the TrackIR open as a window in the background. The window where you see the calibration globe. Leave it open and see if it gets better.

It has happened to be randomly in a mission and this was the workaround. It proceeds to be smooth later after being open.

If it fixes. There is something else going on.

• Don't run DCS as admin.
• Don't run TrackIR as admin.

[wolfitoXtreme]

33 minutes ago, Czar said:

Try keeping the TrackIR open as a window in the background. The window where you see the calibration globe. Leave it open and see if it gets better.

It has happened to be randomly in a mission and this was the workaround. It proceeds to be smooth later after being open.

If it fixes. There is something else going on.

• Don't run DCS as admin.
• Don't run TrackIR as admin.

No this is not a random thing, I never run these things as an admin and if I did was for testing, but the results were the same, I would say is a constant event, panning smooth -> stutter -> smooth -> stutter and so on, it happens in any other sim, but in DCS is most noticeable for whatever reason, not sure is there is a way to measure this, there should be, but is definitively not beacause drops in frame times or anything similar.

According of one source, TrackIR should be running in High-Speed (480 Mbps)., not sure how reliable is this but for me is never the case for any of the usb ports I'm using, not sure I'm chasing ghost with this.

Edited 8 hours ago by wolfitoXtreme

[Czar]

2 hours ago, wolfitoXtreme said:

No this is not a random thing, I never run these things as an admin and if I did was for testing, but the results were the same, I would say is a constant event, panning smooth -> stutter -> smooth -> stutter and so on, it happens in any other sim, but in DCS is most noticeable for whatever reason, not sure is there is a way to measure this, there should be, but is definitively not beacause drops in frame times or anything similar.

According of one source, TrackIR should be running in High-Speed (480 Mbps)., not sure how reliable is this but for me is never the case for any of the usb ports I'm using, not sure I'm chasing ghost with this.

Are you running the sensor in a USB hub? Might be the cause if so.

Plug directly into the motherboard to see, or even on a front panel USB port.

If you can't. Try removing some of these peripherals out of that hub to see if it gets better. It might be a case of saturating the connection too much and then producing the poor bandwidth.

Edited 5 hours ago by Czar