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Why is it when Client joins the camera will have a Rotation Jitter for Basic Character?

When a client joins, his/hers camera jitters like crazy while the servers camera is fine. These are the steps I took:

Create new empty project. Add new Blueprint GameMode. Add new Blueprint Character.

In the character: Add a camera and offset it back( like for a 3rd person game ) Select a skeletal mesh to be used as its Mesh. Add basic movement code for WASD. Add basic rotation code using the mouse.

Now start 2 clients, and watch the client jitter.

Is there something I'm doing wrong, if so how can I get rid of this issue?

Thanks and kind regards,


Product Version: Not Selected
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asked Apr 30 '14 at 07:09 PM in Bug Reports

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Hello, Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes. If you are still experiencing the issue you reported in the current engine version, then please respond to this message with additional information and we will investigate as soon as possible. If you are experiencing a similar, but different issue at this time, please submit a new report for it. Thank you.

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answered Oct 03 '14 at 01:37 PM

avatar image Osman Oct 03 '14 at 02:42 PM

Hi Steve,

Yes this problem has been resolved in later versions of the engine, i completely forgot about this question. It's resolved, thank you!

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Here's an easier repro:

  • Create a new TP_ThirdPersonBP

  • Open MyCharacter, check "Use Controller Rotation Yaw"

  • Make sure you get over 50 fps

  • Set "Run Dedicated Server", hit play and rotate the character

I suspect this problem comes from APawn::FaceRotation, which ends up in UPrimitiveComponent::MoveComponent. The jittering only occurs when the character is on the ground.

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answered May 01 '14 at 03:17 PM

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