Odd frame stuttering.

[Eztrcfyu]

Hey guys,

I'm currently running SLI GTX 670's (Asus DCII's) with an Asus VG278HE @144Hz, along with a small 720p TV as a secondary display for monitoring temps and my GPU's.

The VG278 is connected with DVI and the TV with HDMI. Running Windows 7, latest Nvidia drivers etc.

A few nights ago, I started getting really odd stuttering. Whenever I moved my mouse, my framerate would drop significantly (MSI Afterburner showed the drop too). The faster I moved the mouse, the more it would drop, so if I moved it fast enough at a consistent speed it would drop to 0 until I stopped moving the mouse.

I swapped out the DVI on the VG278 for a HDMI cable (disconnecting the TV), which fixed the stuttering, but I was obviously only getting 60Hz not 144. Today I switched back to the DVI cable, and the stuttering was gone again, but only when I had the TV disconnected. I'm not sure whats going on, but for some reason the stuttering only occurs when I have the second monitor connected, and the problem only started a few days ago after working perfectly for over a month.

Does anyone know what could be causing it, and any possible solutions? I've tried changing basically everything that could affect it in the Nvidia control panel, nothing helped, the only thing that did was disconnecting the TV. I'd rather not stop using it as its quite handy.

Thanks,

Phil

[TechFan@ic]

I actually remember having this issue a very very long time ago on my 8800 GT, check the CPU load while this issue occurs, it should spike, if it does then there is something leeching the performance of your CPU, find out what it is.

[Flamewalker]

Try disabling the audio (of the tv) in the nvidia control panel if it isn't turned off already (nvidia control panel>display>set up digital audio).

And change in "multi-display/mixed gpu acceleration" from multiple display performance mode to single display performance mode (i think this fixed my 8800gts stuttering whenever i moved my mouse towards the side where it normally would move towards the other screen)

[Eztrcfyu]

Try disabling the audio (of the tv) in the nvidia control panel if it isn't turned off already (nvidia control panel>display>set up digital audio). And change in "multi-display/mixed gpu acceleration" from multiple display performance mode to single display performance mode (i think this fixed my 8800gts stuttering whenever i moved my mouse towards the side where it normally would move towards the other screen)

I've already set it to Single Display Performance Mode, and disabled the audio over HDMI. Those were both set before the stuttering started.

[unidentical]

Does the problem persist if you disable SLi?

[Eztrcfyu]

Yes, I've tried that already too. Disabling SLI didn't fix anything. Even just plugging in the second monitor will cause the stuttering, and it continues to stutter after the second monitor is disconnected until I restart the whole computer.