R190 - jerking on IE, Chrome, Firefox, Opera

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  • Problem Description

    Every moving Sprite, Scrolls etc. are jerking! It is impossible to create projects now because noone want play lagging games!

    Attach a Capx

    Capx is attached. It have just simple Bullet behaviour without actions! Lags and jerkings are visible by pure eye!

    Description of Capx

    It have just simple Bullet behaviour without actions! Lags and jerkings are visible by pure eye!

    Affected Browsers

    • Chrome: YES
    • FireFox: YES
    • Internet Explorer: YES

    Operating System and Service Pack

    Win 7 Pro SP1

    Construct 2 Version ID


  • HI Unknow01 - I'd love to know if this is a problem experienced by others before I upgrade to r190.

  • Hello hundredfold,

    yes, even others here on forum have same experience (try search key "jerking" / "jerkiness"). BTW you can download .capx file and test it yourself.

  • - I just downloaded it and it doesn't look particularly smooth in my r184.

  • x

    I not use Node-Webkit.

  • Oh my bad, I read your post a bit too fast. I'll delete it!

  • Frankly, I'm waiting a bit on r190...but that's because of node-webkit.

    I think part of the 'jerkiness' you are seeing is simply due to having a fast moving object without induced blurring. Here's a capx with a speed dependent motion blur effect added (no webGL, just an extra sprite). You can toggle the effect on and off, and adjust the timescale to see it in 'slo-mo'. You might find it useful.

    https://www.dropbox.com/s/60iw05zkc9nfh ... .capx?dl=0

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  • Hello TiAm,

    jerking is well visible while object move but PROBLEM is not in single obejct! Whole project (everything) jerks while it happen. You can try capx and slow down Bullet speed, add other objects etc...

  • Can't reproduce here, all of IE11, Chrome and Firefox Nightly (latest) are pretty smooth. Firefox is a bit jumpy at the start but "warms up" (presumably the JIT compilation finishes).

    Are your graphics drivers up to date? What does Chrome report about hardware acceleration in chrome://gpu?

  • Dear Ashley,

    I have older IE, but Chrome, Opera and Firefox is actual. Jerking is visible by pure eye - it happens almost every 5 - 10 seconds. Tested on multiple computers. It is far away from smooth. Because of this I stopped all development. Hope you will reproduce it, if not i can try to record it somehow.

    Chrome report about hardware acceleration:

    Graphics Feature Status

    Canvas: Hardware accelerated

    Flash: Hardware accelerated

    Flash Stage3D: Hardware accelerated

    Flash Stage3D Baseline profile: Hardware accelerated

    Compositing: Hardware accelerated

    Multiple Raster Threads: Disabled

    Rasterization: Software only, hardware acceleration unavailable

    Threaded Rasterization: Enabled

    Video Decode: Hardware accelerated

    Video Encode: Hardware accelerated

    WebGL: Hardware accelerated

  • How serious is it? Is it like a single dropped frame or a few hundred millisecond pause?

  • Of course it is serious. My computer can run modern 3D FPS games on high details with perfect smooth ... but one 2D canvas jerks every 5-10 seconds. FPS are around 59-60.

    It is like .... smooth movement ... jerk jerk jerk jerk jerk ... smooth ... smooth ... jerk jerk jerk jerk ... smooth ... LAG ... smooth ... jerk jerk jerk ... .... i will try to record it.

  • Here is a video:


    REMOVE chars * ... I can not post URLs.

    Jerkings is well visible around second nr. 5 and nr. 13.

    As I sad before. It is not a problem of one moving object but whole project jerk.

  • I've just tested your capx.

    I first would have suspect the vsync bug of chrome. (which should probably be fixed soon)

    But that jerking issue also appears in firefox. Oo

    That's quite alarming. I'm really confused with all those jerkiness problems...

  • Thank you KaMiZoTo for message. I am glad that other one have same problem and YES, THIS PROBLEM IS QUITE ALARMING!... Hope Ashley repair it soon because everything jerks

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