Hi everyone,
I'm facing a flickering issue in my Unity project where I'm using Spine SkeletonGraphic to display bot avatars during a matchmaking scrolling animation. The avatars are updated every 0.25s, and each update sets a new skin, refreshes the slots, and starts the "Idle" animation.

The issue is that, during these fast updates, I occasionally see the <none> state for a fraction of a second, which results in a visual "trim" or flicker. I suspect it has to do with SetSlotsToSetupPose() or SetAnimation() not syncing perfectly. Despite adding MixDuration for smooth transitions, the issue persists.

What I Have Tried:

Added MixDuration to SetAnimation calls — still flickers.
Set MixDuration = 0
Ensured SetSlotsToSetupPose() is only called if the skin has actually changed.
-
Played around with Coroutine intervals — no improvement.

Expected Behavior:
Smooth scrolling of different bot avatars without any flickering or <none> state visibility during updates.

private void DisplayBotData(BotData data) {
if (BotAvatarImage != null) BotAvatarImage.sprite = data.Avatar;
if (BotDisplayName != null) BotDisplayName.text = data.DisplayName ?? "Bot";
if (BotLevel != null) BotLevel.text = data.Level.ToString();
if (BotPower != null) BotPower.text = data.Power.ToString();

if (BotSpineGraphic != null && !string.IsNullOrEmpty(data.SkinName)) {
    var skeletonData = BotSpineGraphic.Skeleton.Data;
    if (skeletonData != null) {
        var skinToSet = skeletonData.FindSkin(data.SkinName);
        if (skinToSet != null) {
            BotSpineGraphic.gameObject.SetActive(true);

            // Only set the skin if it is different
            if (BotSpineGraphic.Skeleton.Skin?.Name != data.SkinName) {
                BotSpineGraphic.Skeleton.SetSkin(skinToSet);
                BotSpineGraphic.Skeleton.SetSlotsToSetupPose();
            }

            // Attempted crossfade to avoid flicker
            var trackEntry = BotSpineGraphic.AnimationState.SetAnimation(0, "Idle", true);
            trackEntry.MixDuration = 0.1f;
        } else {
            var fallbackSkin = skeletonData.Skins.Count > 0 ? skeletonData.Skins.Items[3] : null;
            if (fallbackSkin != null) {
                BotSpineGraphic.gameObject.SetActive(true);
                BotSpineGraphic.Skeleton.SetSkin(fallbackSkin);
                BotSpineGraphic.Skeleton.SetSlotsToSetupPose();
                var trackEntry = BotSpineGraphic.AnimationState.SetAnimation(0, "Idle", true);
                trackEntry.MixDuration = 0.1f;
                Debug.LogWarning($"Bot skin '{data.SkinName}' not found. Applying first available skin: {fallbackSkin.Name}");
            } else {
                BotSpineGraphic.gameObject.SetActive(false);
                Debug.LogWarning($"Bot skin '{data.SkinName}' not found and no default skin available.");
            }
        }
    } else if (BotSpineGraphic != null) {
        BotSpineGraphic.gameObject.SetActive(false);
    }
} else if (BotSpineGraphic != null) {
    BotSpineGraphic.gameObject.SetActive(false);
}

}

Question:
How can I ensure smooth, flicker-free updates of Spine skins during fast scroll animations? Is there a way to guarantee that <none> state is never visible even for a single frame?