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Screen tearing / Jelly Effect on 4.23 ARKit Camera

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    Screen tearing / Jelly Effect on 4.23 ARKit Camera

    *Environment: OSX 10.14, Xcode 11, iPhone XS Max & iPad Air w/ iOS 13.1.3*

    The screen tearing issue seems only exclusive to 4.23 (and .1), whereas the camera feed looks like being splitted into individual transparent boxes which don't sync (a bit like when vsync is not enabled).

    `stat unit` would show the game is running at 60fps, however the camera feed is nowhere near 60f (more like 30f, even with default AR template). Meantime this issue is not affecting 4.22 and 4.21, wonder if this is something introduced with person segmentation or depth recognition in ARKit 3?

    Does anyone also experience this issue?

    #2
    I am also experiencing this issue (iOS 13, 4.23.1). Turning on VSync (r.vsync 1) improves this issue, but it still happens in the top right corner of the screen

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      #3
      Originally posted by amatthews11 View Post
      I am also experiencing this issue (iOS 13, 4.23.1). Turning on VSync (r.vsync 1) improves this issue, but it still happens in the top right corner of the screen
      Good to know I'm not alone. I suspect something is messed up either with vsync or the tick sync, or depth segmentation. Turning on the tick sync in session config also helps a little bit. But most of the time the tearing seems heavily depends on surrounding brightness and complexity (that's why was wondering if it's related to depth API). Anyway - submitting bug report later.

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        #4
        Update - issue logged and merged with: https://issues.unrealengine.com/issue/UE-81611

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