Known Issue Jetpack in space causes every 3rd frame to be dropped

Discussion in 'Known Issues' started by ravien_ff, Jun 22, 2024.

  1. ravien_ff

    ravien_ff Rear Admiral

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    For more information see here Bug Report Template

    Build: 4480
    Mode: Creative

    SERVER NAME: NA
    SEED-ID: Any

    If applicable:
    MODIFIED PLAYFIELDS: Both

    Reproducibility: Always
    Severity: Major

    Type: Framerate

    Summary: Using the jetpack in space causes the game to freeze every 3rd frame.

    Description: When using the jetpack in space and turning your character, the game will freeze about every 3rd frame. In other words, every 3rd frame is the same as the previous frame. This produces a noticeable jittery/lag effect. It also produces noticeable motion blur in-game (doesn't show up well on video).
    I was able to verify this by taking the footage into Adobe Premiere and checking the individual frames between jetpack and non-jetpack use and seeing that about every 3rd frame was essentially dropped.

    This makes EVA gameplay feel very laggy.
    Problem does not happen when jetpack is disabled (god mode or not).
    I only performed controlled tests in default creative but the issue happens in all game modes and scenarios, SP and MP.
    Problem has been happening for years at least but I could not find a bug report for this under tracking/filed.
    Attached is a link to a video showing the effect.

    Tested on 120FPS, video recorded and rendered in 60FPS.
    Note: this is absolutely NOT my PC as it can handle Empyrion at a steady 120FPS even in fairly taxing scenes and I use a properly configured GSYNC monitor capable of 240hz refresh rate. This was recorded in a new default creative save with no other structures nearby except the creative orbital base. FPS was a steady 120 the whole time.

    This has been a commonly complained about issue in the game (some people literally cannot play with the jetpack due to getting motion sick from this) and hopefully this helps to track down the problem.

    Steps to Reproduce:
    1) Start a new default creative game in the temperate orbit.
    2) Go to space and turn off your jetpack and in first person view turn your character left to right while focusing on the stars.
    3) Turn on your jetpack and turn your character left to right and you will notice it feels laggy/jittery and the stars are blurred.

    Screenshots, Crash Logs, any other Relevant Information or Download links:
    Video showing the issue:
     
    #1
    Garaman, Myrmidon and Vollinger like this.
  2. Myrmidon

    Myrmidon Rear Admiral

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    Another captured video with FPS monitoring histogram

    Game video quality preset : "Best" with Sky reflections quality and Anisotropic filtering set to" Off" DLSS: Off Resolution : 1920x1080 (native) Refresh rate : 75Hz set by driver with in-game Vsync off

     
    #2
  3. Garaman

    Garaman Captain

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    I have also observed this behavior, both as a noticeable stuttering during gameplay for years and as duplicate frames in my recorded videos.
     
    #3

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