diff --git a/NEWS b/NEWS
index 404852631..67d71b706 100644
--- a/NEWS
+++ b/NEWS
@@ -9,6 +9,7 @@ Enhancements
  - [web] don't allow to send the message while an upload is in progress
  - [web] notify when successfuly copied or moved some messages
  - [web] restored indicator in the top banner when a vacation message (auto-reply) is active
+ - [web] removed animation when dragging an event to speed up rendering
 
 Bug fixes
  - [web] fixed refresh of addressbook when deleting one or many cards
diff --git a/UI/WebServerResources/scss/views/SchedulerUI.scss b/UI/WebServerResources/scss/views/SchedulerUI.scss
index 9a44ee70c..57b8ad0d9 100644
--- a/UI/WebServerResources/scss/views/SchedulerUI.scss
+++ b/UI/WebServerResources/scss/views/SchedulerUI.scss
@@ -257,7 +257,7 @@ $quarter_height: 10px;
     opacity: 0.9; // When events from a same calendar overlap, it creates a border to help distinguish the events
     outline: none;
     user-select: none;
-    transition: $swift-linear;
+    //transition: $swift-linear;
     $i: 0;
     @while $i <= 96 { // number of 15-minutes blocks in a day
       &.starts#{$i} { top: $quarter_height * $i; }