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PC lag with Dual Monitor. Please help!!

post #1 of 5
Thread Starter 
Hey guys,

I have just set up a dual display. I have a 25 inch monitor and a 32 inch LG HDTV. I have the LG connected to my GTX 770 video via HDMI and my monitor is connected via DVI.

I have a very annoying problem. Whenever I do something on my MAIN display that requires GPU usage my 2nd monitor starts to lag. Playing HD videos are a good example. It even happens on my main display as well...Whenever I am in Extend mode this happens..

I have a good PC:

Core i5 3570k
8gb RAM
GTX 770
850watt PSU
Windows 7 Ultimate

My drivers are up to date. What do you think could be the problem?? Everything is perfectly fine when using Single monitor setup...

Any help is greatly appreciated! Thanks
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The Loner
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post #2 of 5
If what you're referring to is a slight stutter, then I'm sure everyone has that same issue. I get it occasionally if I have a movie open on one screen, and a youtube video or something on another. But it should only be a slight stutter.
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Main Rig
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HTPC
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File Server
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Intel i7 Extreme 980X Asus P6X58-E Pro Asus GTX 670 DCII TOP Asus GTX 670 DCII 
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Samsung DDR3 WD 500gig Black Samsung 830 Pro SSD Western Digital 1TB Blue 
Optical DriveCoolingCoolingCooling
Pioneer Blu-Ray reader Apogee XT EK CSQ Full Cover 670 Swiftech 655b 
CoolingOSMonitorMonitor
Swiftech 320mm Rad w/ Switchtech 240mm Rad Windows 8.1 N x64 Qnix QX2710 Acer S231HL 
KeyboardPowerCaseMouse
Ducky Zero DK2108s ABS 900w Gold Cooler Master Haf X Logitech G400s 
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X-Trac Ripper XXL Audio Technics ATH-M50s Fiio E10 
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Hard DriveOptical DriveOSMonitor
Western Digital Blue Samsung 24x DVD Burner  Windows 7 Ultimate 64bit Sharp LC60LE640U 
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post #3 of 5
Thread Starter 
Nope it's definitely lag. It's like the frames just drop whenever I focus on something else on the other screen.

I think it may have something to do with my Video cards's clocks going up and down perhaps?
The Loner
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OCZ Agility 128gb SSD ASUS 20X DVD±R DVD Burner Windows 7 x64 Ultimate Ed. HP 2511x 
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The Loner
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Intel Core i5 3570k @4.4ghz MSI Z77A-GD55 Galaxy GTX 770 2gb G.SKILL 2x4gb 1600mhz 
Hard DriveOptical DriveOSMonitor
OCZ Agility 128gb SSD ASUS 20X DVD±R DVD Burner Windows 7 x64 Ultimate Ed. HP 2511x 
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Saitek Eclipse Thermaltake TR2 RX 850W Cooler Master HAF X 942 Cooler Master Sentinel 
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post #4 of 5
If the focus leaves the game - it will lag it up. I see the same thing
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Cooler Master HAF 
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i7-960 Gigabyte X58 ADATA 2x2GB 1600C9 1.65V-1.5V Generic DVD 
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post #5 of 5
Download the latest version of GPU-Z to monitor clock speeds while this is happening. I prefer to force idle/gaming clocks to avoid such annoyances. I'm not sure if my guide still works on latest cards/drivers tho.
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Overclock.net › Forums › Components › Monitors and Displays › PC lag with Dual Monitor. Please help!!