Player jitters when on moving platform

I have just started on a basic platformer game and have been using moving platforms using either tween or ellipse movement.

They move fine, but when my player stands on the platform it appears to jitter and move slightly. Not all the time, but most.

The player has a platformerObject behaviour and the platform has Ellipse and Platform (either Jumpthru or Platform Type)

The platform does not jitter when nothing on it and the player does not jitter when on non moving platform.

I would assume that when on a platform the player should just move with it at the same speed.

I have triple checked collisions and they are all even and square.

The code is not really relevant here as the player uses the standard controls just to jump and move left and right.

The player does have animations, but it’s just idle and all collision points are the same for all.

I have tried setting gravity to a higher amount when on the platform, but that does not change anything either.

player collisions

platform collisions

platform behaviors

player behaviors

Here is a video of the issue.
https://streamable.com/gh4pc3

Any help would be appreciated.

Thank you,

I think I have found a work around solution in the brief time I posted this which will probably work. If I set the Camera catchup speeds to 0.99 it stops jittering.

You can still see it, but a lot less obvious.

I think I’ve had problems with B4 when the platform is moving quickly upwards. What you could try as a work around if it’s a problem is checking a point below players feet to see if point inside platform and then turn off the platform behaviour and set player y to platform y minus half the player height.

Hi,

I will also try that and see if that can help. Thank you for your input.