diff --git a/README.md b/README.md
index 221e71a..94d44af 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,11 @@
 
 This project is a demo for a websocket-based rollback netcode inspired by [GGPO](https://github.com/pond3r/ggpo/blob/master/doc/README.md).
 
-_(the following gif is sped up to ~1.5x for file size reduction, kindly note that around ~11s countdown, the attack animation is resumed from a partial progress)_
+_(the following gif is sped up to ~1.33x for file size reduction, kindly note that around ~8s countdown, the attack animation is resumed from a partial progress)_
 
-![gif_demo](./charts/melee_attack_fractional_anim_resume_spedup.gif)
+![gif_demo](./charts/smooth_melee_attack_spedup.gif)
 
-Please also checkout [this demo video](https://pan.baidu.com/s/1U1wb7KWyHorZElNWcS5HHA?pwd=30wh) to see how this demo carries out a full 60fps synchronization with the help of _batched input upsync/downsync_ for satisfying network I/O performance.
+Please also checkout [this demo video](https://pan.baidu.com/s/172AmIKxbFgGXZzWVqxNUPA?pwd=e2tp) to see how this demo carries out a full 60fps synchronization with the help of _batched input upsync/downsync_ for satisfying network I/O performance.
 
 The video mainly shows the following features.
 - The backend receives inputs from frontend peers and broadcasts back for synchronization.
diff --git a/charts/melee_attack_fractional_anim_resume_spedup.gif b/charts/melee_attack_fractional_anim_resume_spedup.gif
deleted file mode 100644
index 201c6f5..0000000
Binary files a/charts/melee_attack_fractional_anim_resume_spedup.gif and /dev/null differ
diff --git a/charts/smooth_melee_attack_spedup.gif b/charts/smooth_melee_attack_spedup.gif
new file mode 100644
index 0000000..d7a83e4
Binary files /dev/null and b/charts/smooth_melee_attack_spedup.gif differ
diff --git a/frontend/assets/scenes/login.fire b/frontend/assets/scenes/login.fire
index 76a6bfa..3861c72 100644
--- a/frontend/assets/scenes/login.fire
+++ b/frontend/assets/scenes/login.fire
@@ -440,7 +440,7 @@
       "array": [
         0,
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-        216.50635094610968,
+        210.55745061629165,
         0,
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