LODs of animated objects are not synced

[MSFS 2020] Questions & Community Discussions Airports & Sceneries
1

Hi. I am not sure if this has been reported, but LODs of animated objects are
not synchronized with each other. It means, that when switching from one LOD
to another, the animation is usually started from the beginning which makes
the object “jump” to a different position. Some simple objects can be done
with no LODs however more complex - can’t. Would it be possible to fix this in
the future? Here is an example. The plane in the middle is animated. High LOD:

1111×1111 270 KB
Switches to low LOD and
instantly changes position to the beginning of the animation:
1111×1111 265 KB

2

I can confirm, this is long-standing core issue came out of SU5 and its new
xbox LOD system. Unfortunately it affects on static simobjects as well. I see
no moves to fix it

3

Hi. Is there any chance to have this issue investigated by Asobo? It would be
great to have it fixed for animated objects.

4

Hello @DrzewieckiDesign What type of object is this? Is this a scenery object
from a ModelLib or a SimObject?

5

This is a ModelLib object with animation.

6

Hello @DrzewieckiDesign , As we need to make some tests, can you provide us
your project source or at least the objects with which you have the issue (the
moving aircraft for example) please (WeTransfer/Google Drive/ One Drive…)…
(You can select the privacy options bellow the submit button) Best Regards,
Boris

7

Hi. After the latest update, the issue seems to be fixed although a re-export
of the particular animated object is required.

8

Hello @DrzewieckiDesign Some background to explain this behaviour. There is an
optimization process on animations; as you go further away from an object,
some keyframes are skipped and when the bounding sphere size is less than 1%
in screen size, the animation is no longer updated. In most cases, this is not
an issue as the animated parts are small but in cases like yours, this becomes
visible. A workaround is to artificially increase the bounding sphere size so
that this process happens further away from the object. This can be done by
adding invisible geometry in your model (creating an invisible box for
example). Regards, Sylvain

9

FlyingRaccoon, Could you please to include the information above to the
SDK documentation. It would help developers do not waste time to find out that
‘problem’ is just design choice thanks

10

Yes @devmode_player, @Nocturne has already added a note in the animation
section. It will be shown in the next doc build.

11

Can you ask engine developers about optimization on IK chain animation used in
jetways. It’s not key based animation and currently it acts weird when
switching from LOD to LOD thanks