--- a/browser/base/content/tabbrowser.xml
+++ b/browser/base/content/tabbrowser.xml
@@ -7034,17 +7034,18 @@
             newTranslateX -= tabWidth;
           }
 
           let dropIndex = "animDropIndex" in draggedTab._dragData &&
                           draggedTab._dragData.animDropIndex;
           if (dropIndex && dropIndex > draggedTab._tPos)
             dropIndex--;
 
-          if (oldTranslateX && oldTranslateX != newTranslateX) {
+          let animate = Services.prefs.getBoolPref("toolkit.cosmeticAnimations.enabled");
+          if (oldTranslateX && oldTranslateX != newTranslateX && animate) {
             draggedTab.setAttribute("tabdrop-samewindow", "true");
             draggedTab.style.transform = "translateX(" + newTranslateX + "px)";
             let onTransitionEnd = transitionendEvent => {
               if (transitionendEvent.propertyName != "transform" ||
                   transitionendEvent.originalTarget != draggedTab) {
                 return;
               }
               draggedTab.removeEventListener("transitionend", onTransitionEnd);