Predator x34 issue - 'distorted line' rolls up the screen during gaming

rebaker
rebaker Member Posts: 4 New User
in 2016 Archives

Got a new Acer Predator x34 within the last few weeks, and I'm still trying to shake out the best practices with it.

 

I've mostly been playing COD:BO3.

 

I've usually had my monitor set to the full 100hz, but have been testing some lower settings. But one thing I keep noticing is that during play (particularly fast moving sequences) there will every now and then be a line roll up the screen. I'm not sure if it's akin to screen-tearing or not.

 

Now - between the Monitor, Geforce, and In-Game menus, I'm not exactly sure what I need to keep watch on. But any advice would help.

 

Monitor: 100hz, Extreme OD

Geforce: 100hz, GSync Enabled (for both FS and Windowed - Play FS)

In-Game: 100hz in refresh, Disable Sync Every Frame, Have output FPS set all the way up - my in-game FPS display runs at about 80-110 in most cases).

 

Specs for reference:
i7-6700k (@ 4.6ghz)

GTX 980ti

32gb DDR4 3000

 

===

 

Any thoughts?

Answers

  • relm9
    relm9 Member Posts: 6 New User

    When this happens is your FPS over 100? G-Sync is no longer active once going past the monitor's refresh rate (in this case 100 Hz) and tearing will become evident.

     

    You can avoid this by locking your frames to 99.9 using Rivatuner or similar. Or turn VSync on in the Nvidia control panel, it'll activate only when your FPS goes above the monitor's refresh rate.

  • rebaker
    rebaker Member Posts: 4 New User

    I thought G-Sync was explicitely intended to handle just that? Most places say to disable VSync - since Nvidia G-Sync can handle ranges at like 30-144hz with controling the refreshrate of the monitor itself.

     

    And I'd not assume it's when going about 100hz, it's usually when there's a dramatic change (like quickly moving the camera... but even then it doesn't go below the G-Sync range)

     

  • relm9
    relm9 Member Posts: 6 New User

    Well, the G-Sync range is not 30-144 on a 100 Hz monitor. The G-Sync range top out at whatever the max refresh rate of the monitor is.

     

     

    You mentioned you were getting over 100 FPS at times so that's the only reason I bring this up. If you are getting tearing below 100 then something is wrong.

  • rebaker
    rebaker Member Posts: 4 New User

    Funny enough, it seems things are working excellently - notably different - with the new geforce drivers. I can only assume it's the cause since I've done nothing else.

     

    I feel like it's the way it has been intended to function - buttery smooth Gsync at 100hz. No distortion, nothing.

  • Lumpiersorz
    Lumpiersorz Member Posts: 4 New User

    I have the EXACT same issue!



    I even recorded it and posted it on the forums

     

     

    --Skip to 0:20 to see the effect!

    https://vid.me/tDDc

     

     

    It's pretty **bleep** annoying, are you sure yours is gone?

     

  • rebaker
    rebaker Member Posts: 4 New User

    Hmmm, what you posted is a bit different. Never had any intense white line going horizontal.

     

    Best way to describe is probably just what looks like a screentear and it rolls up the screen. It's not as dramatic as a normal screen-tear, but seems to happen with a sudden switch in FPS (a 50fps drop, but still within the 30-144 range for Gsync).

     

    I haven't seen it at all with the new Geforce Drivers. The entire experience feels WAY smoother overall, including not having those slight surges rolling up the screen.

  • Lumpiersorz
    Lumpiersorz Member Posts: 4 New User

    The issue looks like that in games.

     

     

    This is what it looks like in Geforce Pendulum Test - Enable test pattern.

     

    The artifact appears when you turn the maximum fps up to 200 and minimum down to 25. What you see is a horziontal tear going up vertically. In games it is obviously not white, but just a tear going up, just like you describe.

  • relm9
    relm9 Member Posts: 6 New User

    That just looks like normal tearing to me. If your FPS is over 100 you will get tearing. Can you reproduce that artifact by leaving the values within the G-Sync range of 30-100?

  • Lumpiersorz
    Lumpiersorz Member Posts: 4 New User

    Thank you, it appears the problem is not there within 30 to 100. Therefore, you must be right about the gsync.  Although I still find it odd, that it only teared once with a horizontal line, if GSYNC wasn#t enabled, the entire pillar would be broken. 

     

     

    My only concern with this monitor atm is scanlines, but I can only see those if I plaster my face onto the screen on a solid color background. 

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