diff --git a/extra/ui/cocoa/cocoa.factor b/extra/ui/cocoa/cocoa.factor
index 6607a22f50..7492ad19b7 100755
--- a/extra/ui/cocoa/cocoa.factor
+++ b/extra/ui/cocoa/cocoa.factor
@@ -19,7 +19,7 @@ SYMBOL: stop-after-last-window?
 : event-loop ( -- )
     event-loop? [
         [
-            [ NSApp do-events ui-step ] ui-try
+            [ NSApp do-events ui-step 10 sleep ] ui-try
         ] with-autorelease-pool event-loop
     ] when ;
 
diff --git a/extra/ui/tools/workspace/workspace.factor b/extra/ui/tools/workspace/workspace.factor
index 79857fa2e6..b8c41e17cc 100755
--- a/extra/ui/tools/workspace/workspace.factor
+++ b/extra/ui/tools/workspace/workspace.factor
@@ -2,11 +2,10 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: classes continuations help help.topics kernel models
 sequences ui ui.backend ui.tools.debugger ui.gadgets
-ui.gadgets.books ui.gadgets.buttons
-ui.gadgets.labelled ui.gadgets.panes ui.gadgets.scrollers
-ui.gadgets.tracks ui.gadgets.worlds ui.gadgets.presentations
-ui.gadgets.status-bar ui.commands ui.gestures assocs arrays
-namespaces ;
+ui.gadgets.books ui.gadgets.buttons ui.gadgets.labelled
+ui.gadgets.panes ui.gadgets.scrollers ui.gadgets.tracks
+ui.gadgets.worlds ui.gadgets.presentations ui.gadgets.status-bar
+ui.commands ui.gestures assocs arrays namespaces ;
 IN: ui.tools.workspace
 
 TUPLE: workspace book listener popup ;
diff --git a/extra/ui/ui.factor b/extra/ui/ui.factor
index 98549a16f7..bafd6c40c5 100755
--- a/extra/ui/ui.factor
+++ b/extra/ui/ui.factor
@@ -65,18 +65,6 @@ M: world ungraft*
     dup world-handle (close-window)
     reset-world ;
 
-: open-world-window ( world -- )
-    dup pref-dim over set-gadget-dim dup relayout graft ;
-
-: open-window ( gadget title -- )
-    >r [ 1 track, ] { 0 1 } make-track r>
-    f <world> open-world-window ;
-
-HOOK: close-window ui-backend ( gadget -- )
-
-M: object close-window
-    find-world [ ungraft ] when* ;
-
 : find-window ( quot -- world )
     windows get values
     [ gadget-child swap call ] curry* find-last nip ; inline
@@ -148,9 +136,20 @@ SYMBOL: ui-hook
         notify-queued
         layout-queued
         redraw-worlds
-        10 sleep
     ] assert-depth ;
 
+: open-world-window ( world -- )
+    dup pref-dim over set-gadget-dim dup relayout graft ui-step ;
+
+: open-window ( gadget title -- )
+    >r [ 1 track, ] { 0 1 } make-track r>
+    f <world> open-world-window ;
+
+HOOK: close-window ui-backend ( gadget -- )
+
+M: object close-window
+    find-world [ ungraft ] when* ;
+
 : start-ui ( -- )
     init-timers
     restore-windows? [
diff --git a/extra/ui/windows/windows.factor b/extra/ui/windows/windows.factor
index 290e4ef311..7c7e0298fe 100755
--- a/extra/ui/windows/windows.factor
+++ b/extra/ui/windows/windows.factor
@@ -94,8 +94,7 @@ SYMBOL: mouse-captured
     3drop window draw-world ;
 
 : handle-wm-size ( hWnd uMsg wParam lParam -- )
-    [ lo-word ] keep hi-word make-RECT get-RECT-dimensions 2array
-    2nip
+    [ lo-word ] keep hi-word make-RECT get-RECT-dimensions 2array 2nip
     dup { 0 0 } = [ 2drop ] [ swap window set-gadget-dim ui-step ] if ;
 
 : wm-keydown-codes ( -- key )
@@ -348,7 +347,10 @@ M: windows-ui-backend (close-window)
 : event-loop ( msg -- )
     {
         { [ windows get empty? ] [ drop ] }
-        { [ dup peek-message? ] [ >r [ ui-step ] ui-try r> event-loop ] }
+        { [ dup peek-message? ] [
+            >r [ ui-step 10 sleep ] ui-try
+            r> event-loop
+        ] }
         { [ dup MSG-message WM_QUIT = ] [ drop ] }
         { [ t ] [
             dup TranslateMessage drop
diff --git a/extra/ui/x11/x11.factor b/extra/ui/x11/x11.factor
index 857b13a973..2b1a5ba331 100755
--- a/extra/ui/x11/x11.factor
+++ b/extra/ui/x11/x11.factor
@@ -178,7 +178,7 @@ M: world client-event
         next-event dup
         None XFilterEvent zero? [ drop wait-event ] unless
     ] [
-        ui-step wait-event
+        ui-step 10 sleep wait-event
     ] if ;
 
 : do-events ( -- )