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This is the best wording yet to describe my issue -- exactly! By primary monitor, do you mean the one that has my start menu? It is currently set to the "clone source" and primary monitor in Windows. In fact, this is exactly what I was about to start working on. Unfortunately I had started to...

So it took me quite some time to track down what my issue was, example HERE: http://www.sendspace.com/file/h9ppml However just last night I had a breakthrough. Summary: When I clone my 120hz monitor with another monitor that is not 120hz, VSync is getting very confused. Basically, I will not...

Yeah. It's definitely an issue when cloning two monitors with different refresh rates. I think I'll make a new thread tomorrow since this has gone far off the rails from what I initially thought it was. Thanks for all the help.

Okay, so this issue is only happening when I am cloning my primary monitor with my receiver. I think certain programs are reading the receiver as the primary display device, even though I have specifically set my ASUS to be the primary clone source. As soon as I turn off the clone, it works...

As crazy as it is, after plugging the monitors all back in, it seems to be working properly. I'll update if anything changes. Kicking myself for not trying this earlier...

Major Breakthrough When I unplugged my other monitors, programs started behaving properly with VSync ON. I think my PC is somehow thinking that my primary monitor is not the ASUS. It did have a #2 next to it in my display properties, but I didn't think that mattered. Regardless, this...

Just ran some tests. Not sure how to interpret the output. Here it some of it: Frame, Time (ms) 1, 0.000 2, 18.036 3, 31.925 4, 52.763 5, 66.647 6, 80.539 7, 101.374 8, 115.263 9, 129.152 10, 149.985 11, 163.875 12...

I have a total of 20ft of DVI-D cable. Might this be an issue? My desktop appears fine at 144hz.

More testing -- Using Crusader Kings 2. I loaded the game with VSync ON in NVIDIA CP, and set my in-game refresh rate to 60. No problems at all. I then set my refresh rate to 144, reloaded the game, and experienced the terrible mouse stutter, and FRAPS had an interesting output: The line...

Another shot in the dark -- would there be a chance that I'm experiencing a lag on my monitor, and not my PC? I'm thinking of this because FRAPS was reporting a constant framerate, but I was seeing a stagger. I am using an extension cord for my DVI-D cable, so I'm wondering if an issue like...

So in doing some more testing.. With VSync OFF in a few applications I experience no mouse stutter at all. Then when testing using Metro Last Light, I feel like there is still a VERY slight mouse stagger still. Almost barely noticeable though. I just want to make sure we are on the right track...

Sorry. I should have included them: Lynnfield i7 860 G.SKILL Ripjaws X Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) GIGABYTE GA-P55-USB3 LGA 1156 Intel WD Blue WD5000AAKS 500GB 7200 RPM 16MB Cache SATA 3.0Gb/s ASUS VG248QE 144hz Monitor I did the "clean install" just...

Since I'm starved for options, I will try this as soon as I get home as well. If my video sets off any switches, let me know. I'm dying for any ideas, I feel like there's definitely some issue on my PC, and still a little worried I might have a faulty component.

Haha yeah edit fest indeed :p So you saw something similar happening on your GTX 670's before? Do you think if I used the custom BIOS you used it might fix my issues as well?

Edit: As far as my temps, I am at a very healthy level in most of these programs. The programs I used to test with today, I wasn't even hitting 65C. I have overclocked however. I could try to completely drop my OC and see what happens, but I think I've done that before.

This might end up being the best solution for me, but what gives? Is there a problem on my computer or is this the way it should be behaving? For shits and giggles I will try a different mouse tonight, but as the other poster stated, probably a shot in the dark. Again, any chance this is a...

Unsure, but this doesn't happen on my desktop and doesn't happen in every graphic application either. With VSync off, it is not happening at all. Would that eliminate that idea?

Is there any chance these issues could be caused by something outside of the software realm? ie - Bad video card, bad cables? Would like to rule those out if possible.

For the two games I tested -- Only one had an option for VSync. I had that set to OFF. The blur testing program unfortunately doesn't let me change any settings. However wouldn't NVIDIA Control Panel override the game settings either way?

With Adaptive VSync enabled, I am still unable to get a framerate between 144 and 60 in the blur testing program. It is only 144 or 60. Only with VSync specifically off will it maintain 144(while sometimes dropping to 143). Since I didn't want to only use that program to test, since there could...

Thank you. This has been the most informative post, and I understand a few more things now. I think Adaptive VSync might be my best bet, unless I am using a program that can maintain well over 144 or 120fps, correct? As far as tearing, there's nothing I can really do about that, so I'll...

Hmm.. So perhaps I will try enabling Adaptive VSync again then and see what happens. But I still don't think I should be losing any frames from this program. Why when I would use Vsync on a 60fps monitor, I wouldn't drop to 30 all the time? I should be able to lock in at 120fps and have no drops.

I believe the problem is -- it should absolutely not be dropping below 120. You can see in the videos above that the program should not be losing frames at all. Additionally, I believe I have tried with Adaptive VSync and experienced similar issues. I can try again tonight and report what...

I'm on an NVIDIA GTX 670, using an ASUS 144hz monitor. Any other specific specs that would help? I feel like this is exactly what is happening, however one of the programs I am using should absolutely not be dropping below 120fps. It's PixPerAn, a motion blur testing program. Take a look what...

I recently upgraded to a 120hz monitor. With Vsync on, I am experiencing what I believe I have read to be called 'microstutter'. Basically, my framerate will be steady at 120 and then suddenly drop to 60, causing jerky motion to my graphics. Is this normal, or is my graphics card dropping...

I was thinking about the cable -- but it happens on multiple monitors. It's DVI-D with an extender on it. It happens on multiple monitors, but my main monitor is ASUS VG248QE - 144hz. And I explained in my last post on the other thread why I made a new thread -- the title and information...

Is there a chance this is related to other hardware? Hard drive?

Uploaded a video showcasing what is happening. I have vsync on, running a program that I should obviously be able to maintain 120fps in, and you can see the frame stutter. The car should be moving smoothly across the screen, but it looks like the guy is pumping the breaks every other second...

I did take a look at the temps, and they seem to be normal. Additionally, this is ALWAYS happening. I can start my computer up right now, boot into just about any game, and will experience the issue right away. Is there any chance there could be damage to my video card? I've changed so many...

Is this really related to Vsync though? With Vsync completely off, I should not be seeing any screen stutter, should I? It seems very apparent, and I've never seen it before. Not with my first 120hz monitor, and not with my old 60hz monitors. There is a stutter delay that should not be...

Update: Uploaded a video to showcase what is happening: http://www.sendspace.com/file/xz2303 Hello, I have been experiencing what seems like a frame drop, or frame stutter. Initially I thought that changing VSync to OFF would fix the issue, but it was still happening -- just less obviously...

Thanks for the advice guys. At this point, I think I've isolated my issue to my card randomly dropping a frame or two. It's kind of gone off the track for what I thought the issue was when I originally posed this. I think I am going to start a new thread and re-collect my thoughts. That way I...

Sorry for triple post, but on topic of Lightboost -- If I have vsync set to OFF, will I be able to use Lightboost? In Metro:Last Light, I am now getting over 120fps, which I believe is causing Lightboost to turn off. It actually seems to be turning off right when I launch the game. And I am...

Testing again at 120hz and Lightboost on with the PixPer program and it looks good. I am thinking perhaps I had initially had my VSync set to Off in NVIDIA CP. However I am seeing a screen tearing at the top that I don't recall, so maybe I didn't. It seems to look good again. The only...

Yes sir. :) That is actually what turned me on to the Blur test program, and what I had been most recently experimenting with before this issue started. I had initially thought that it was actually a Lightboost issue, then I ruled that out. A fellow lightboost member was helping me troubleshoot...

"Let the 3d Application decide" and "On" both produce the same result. However, setting VSync OFF results in the PixPerAn program holding my current refresh rate(144hz) without a single drop.

Going to try this way now and will report back. Consider it mysterious. GPU & CPU both below 5% in PixPerAn. GPU temp: 33C CPU temp: 50C I have close to nothing running in background. No antivirus is even installed on my PC. I would question the program itself, but literally two...

Here is a .MOV video of the Pixel blur test program showing what is happening to the frames. Everything said about the card needing to drop to 60fps makes sense, but if you see the program I am running -- there is no reason my GTX 670 shouldn't be able to hold 120fps easily. Video(25Mb)...

I think NVIDIA will always override the game setting unless I tell it to use 3d application setting. Do you mean that I should try to set it to have the 3d application decide, then set VSync on in a game and see?

Correct. Sounds like we are both experiencing some random frame dropping, that seemingly can't be explained. If one frame drops, it will cause the other 59 (or 29) to be discarded. I think my root issue is finding out what is causing that one frame drop in some applications. I'm actually...