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  1. #1
    ROG Guru: White Belt Array MRBULL PC Specs
    MRBULL PC Specs
    MotherboardMaximus Formula XI
    ProcessorIntel I9 9900k
    Memory (part number)G.Skill F4-3400C14-8GTZ
    Graphics Card #1EVGA GeForce RTX 2080 Ti XC ULTRA
    Sound CardROG Xonar Phoebus
    MonitorROG PG279Q
    Storage #1Evo 970 1TB m2
    Storage #2Evo 970 500gig m2
    CPU CoolerEVGA CLC 280
    CaseObsidian 900D Super Tower
    Power SupplyCorsair HX Series™ HX1050
    Keyboard Logitech G510
    Mouse Logitech G502
    Headset Sennheiser pc350 special edition
    OS Windows 10 pro
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    Nov 2013
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    Laggy interface / UI on some apps

    few days ago I noticed on some applications my mouse is extremely laggy and sluggish , but no abnormal usage of ram or cpu , example Tumbgen interface / Discord / etc.. it's like it's taking all the juice of the computer , as soon I minimize those apps then everything returns to normal .. very odd, no idea what could cause this.

    Update: I figured out that moving those apps to my second monitor no longer causes the lag , so something is screwed up with the ASUS PG279Q ROG Swift

    **UPDATED**: disabling G-sync fixed all the problems, my apps no longer lag the lag was bad as if it was in slow motion

    is there something wrong with the monitor? I tried to reset to default and it didn't work
    Last edited by MRBULL; 01-24-2016 at 03:57 PM.

  2. #2
    ROG Guru: Yellow Belt Array Onimax PC Specs
    Onimax PC Specs
    MotherboardRampage V Edition 10
    ProcessorIntel Core i7 6950X
    Memory (part number)G.Skill RipJaws V DIMM Kit 128GB, DDR4-3000, CL14-14-14-34 (F4-3000C14Q2-128GVKD)
    Graphics Card #1NVIDIA TITAN X (Pascal)
    Graphics Card #2NVIDIA TITAN X (Pascal)
    Monitor2* ASUS ROG Swift PG279Q
    Storage #1Samsung 950 Pro 512GiB
    Storage #2Samsung 850 Pro 1TiB
    CPU CoolerEKWB Custom loop
    CaseCaseLabs Magnum SMA8
    Power SupplyCorsair AX1500i
    Keyboard Logitech G910
    Mouse Logitech G900
    Headset SteelSeries H Wireless
    OS Windows 10 x64

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    Dec 2014
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    Hi MRBULL,

    I happen to have the exact same problem, but I believe to have managed to find the cause.
    You need to set the refresh rate of both monitors to the same value, otherwise this form of stuttering occurs (I don't think that this is working as intended, but it fixes the problem).
    Also if you are using a SLI configuration I found that the NVidia drivers become very picky.
    What did the trick for me was setting both monitors to 60Hz, remove SLI, disable GSync, re-enable SLI, set both monitors (primary first, then secondary) to 165Hz and re-enable GSync with the windowed-mode option - then the stuttering should be gone.

    As I have two PG279Qs your problem may not be caused by the same issue, but anyways I hope it helps.
    Last edited by Onimax; 01-24-2016 at 04:03 PM.

  3. #3
    ROG Guru: White Belt Array MRBULL PC Specs
    MRBULL PC Specs
    MotherboardMaximus Formula XI
    ProcessorIntel I9 9900k
    Memory (part number)G.Skill F4-3400C14-8GTZ
    Graphics Card #1EVGA GeForce RTX 2080 Ti XC ULTRA
    Sound CardROG Xonar Phoebus
    MonitorROG PG279Q
    Storage #1Evo 970 1TB m2
    Storage #2Evo 970 500gig m2
    CPU CoolerEVGA CLC 280
    CaseObsidian 900D Super Tower
    Power SupplyCorsair HX Series™ HX1050
    Keyboard Logitech G510
    Mouse Logitech G502
    Headset Sennheiser pc350 special edition
    OS Windows 10 pro
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    My other monitor is max 60hz IPS panel, as soon G-sync is disabled everything is working fine , and it started doing this since I upgraded to Nvidia 361.60 that I can recall , so I'm seriously thinking this is a Driver issue

    quick video of the problem , you cant see the stuttering in the video but it is on my screen
    https://www.youtube.com/watch?v=UwJW...ature=youtu.be

    I have disabled the second monitor it didn't change anything.. it is deff a Gsync issue
    Last edited by MRBULL; 01-24-2016 at 04:48 PM.

  4. #4
    ROG Member Array agentbb007 PC Specs
    agentbb007 PC Specs
    MotherboardAsus Maximus VIII Hero
    ProcessorSkylake i7-6700k
    Memory (part number)Crucial Ballistix Sport LT DDR4 2400 16GB
    Graphics Card #1GTX Titan X
    Graphics Card #2GTX Titan X
    Monitor3 Asus ROG Swift PG278Q
    Storage #1Samsung 850 EVO 500GB SSD
    CPU CoolerNZXT Kraken X61 Liquid Cooler
    CaseNZXT Noctis 450
    OS Windows 10 Pro

    Join Date
    Sep 2014
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    I have the same issue with the NZXT Cam program running 3 Asus ROG PG278Q, it's a problem caused by G-SYNC. NZXT has acknowledged the problem and said they would have a fix soon. Hopefully the programs you are using do the same.

  5. #5
    ROG Guru: White Belt Array MRBULL PC Specs
    MRBULL PC Specs
    MotherboardMaximus Formula XI
    ProcessorIntel I9 9900k
    Memory (part number)G.Skill F4-3400C14-8GTZ
    Graphics Card #1EVGA GeForce RTX 2080 Ti XC ULTRA
    Sound CardROG Xonar Phoebus
    MonitorROG PG279Q
    Storage #1Evo 970 1TB m2
    Storage #2Evo 970 500gig m2
    CPU CoolerEVGA CLC 280
    CaseObsidian 900D Super Tower
    Power SupplyCorsair HX Series™ HX1050
    Keyboard Logitech G510
    Mouse Logitech G502
    Headset Sennheiser pc350 special edition
    OS Windows 10 pro
    MRBULL's Avatar
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    No the problem is Nvidia Drivers , it didn't do this with previous drivers it's since I installed 361.60 , and it's only in G-sync windowed mode setting

    NVidia needs to fix this issue

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