Even when setting the target to “all groups” using “Change Game Speed,” the changes do not apply to all objects. It works when specifying groups individually, so I don’t think the setup is wrong, but…
Have you confirmed that all game objects are assigned to a group?
Sometimes, objects may be created without being assigned to any group, so I usually create a common group that includes all game objects (e.g., a “GameObject” group).
If a game object does not belong to any group, actions or conditions that use “Any Group” may not function correctly.
So, as long as you belong to some group, that’s fine, right? Things that don’t stop with “all groups” will stop with “enemy”.
Also, I feel that in Action Game Maker, “All Groups” often doesn’t function correctly. It’s not limited to this case—I remember having to specify groups one by one because “All Groups” didn’t work several times.
Since I am using machine translation, there is a possibility that the intended meaning has not been accurately conveyed. Please bear with me.
What I wanted to say is that, in order to ensure all group functions operate correctly, at minimum, every GameObject must belong to some group—whether it’s a group for players, enemies, or a more general “game object” group.
However, I will check with the developers to confirm whether objects that belong to no group at all are also intended to be included as targets. If the specification is meant to include all objects, then there may be a bug, and I would like to clarify this point.
Until then, as a temporary workaround, adding the object to any group should allow it to function properly.