diff --git a/doc/changelog.asciidoc b/doc/changelog.asciidoc
index 29bd527d3..a7df853ea 100644
--- a/doc/changelog.asciidoc
+++ b/doc/changelog.asciidoc
@@ -106,6 +106,7 @@ Fixes
 - The "try again" button on error pages works correctly again.
 - :spawn -u -d is now disallowed.
 - :spawn -d shows error messages correctly now.
+- Performance improvements for smooth scrolling
 
 v0.11.0
 -------
diff --git a/qutebrowser/browser/webengine/webenginetab.py b/qutebrowser/browser/webengine/webenginetab.py
index 4de4bf26f..09df38e82 100644
--- a/qutebrowser/browser/webengine/webenginetab.py
+++ b/qutebrowser/browser/webengine/webenginetab.py
@@ -333,9 +333,10 @@ class WebEngineScroller(browsertab.AbstractScroller):
                 perc_y = min(100, round(100 / dy * jsret['px']['y']))
 
             self._at_bottom = math.ceil(jsret['px']['y']) >= dy
-            self._pos_perc = perc_x, perc_y
 
-            self.perc_changed.emit(*self._pos_perc)
+            if self._pos_perc != (perc_x, perc_y):
+                self._pos_perc = perc_x, perc_y
+                self.perc_changed.emit(*self._pos_perc)
 
         js_code = javascript.assemble('scroll', 'pos')
         self._tab.run_js_async(js_code, update_pos_cb)