diff --git a/layout/reftests/box-shadow/reftest.list b/layout/reftests/box-shadow/reftest.list
index cc9110029713..90369a950c21 100644
--- a/layout/reftests/box-shadow/reftest.list
+++ b/layout/reftests/box-shadow/reftest.list
@@ -11,10 +11,10 @@ random != boxshadow-blur-2.html boxshadow-blur-2-notref.html # fixedpoint divisi
 == boxshadow-rounding.html boxshadow-rounding-ref.html
 # One uses old path, one uses WR box shadow.
 fails-if(Android) fuzzy-if(webrender,50,3310) == boxshadow-button.html boxshadow-button-ref.html
-fuzzy-if(OSX==1010,1,24) fuzzy-if(d2d,16,908) fuzzy-if(webrender,23,1920) == boxshadow-large-border-radius.html boxshadow-large-border-radius-ref.html # Bug 1209649
+fuzzy-if(OSX==1010,1,24) fuzzy-if(d2d,16,908) fuzzy-if(webrender,18,2160) == boxshadow-large-border-radius.html boxshadow-large-border-radius-ref.html # Bug 1209649
 
 fails-if(Android) == boxshadow-fileupload.html boxshadow-fileupload-ref.html
-fuzzy-if(skiaContent,13,28) fuzzy-if(webrender,25-25,50-50) == boxshadow-inner-basic.html boxshadow-inner-basic-ref.svg
+fuzzy-if(skiaContent,13,28) fuzzy-if(webrender,29-29,453-453) == boxshadow-inner-basic.html boxshadow-inner-basic-ref.svg
 random-if(layersGPUAccelerated) == boxshadow-mixed.html boxshadow-mixed-ref.html
 == boxshadow-mixed-2.html boxshadow-mixed-2-ref.html
 random-if(d2d) fuzzy-if(skiaContent,1,100) fuzzy-if(webrender,127,3528) == boxshadow-rounded-spread.html boxshadow-rounded-spread-ref.html
diff --git a/layout/reftests/bugs/reftest.list b/layout/reftests/bugs/reftest.list
index 5e8750ff7fac..82025fcb5f78 100644
--- a/layout/reftests/bugs/reftest.list
+++ b/layout/reftests/bugs/reftest.list
@@ -305,7 +305,7 @@ fuzzy-if(Android,3,50) fuzzy-if(skiaContent,1,133) == 273681-1.html 273681-1-ref
 == 283686-2.html 283686-2-ref.html
 == 283686-3.html about:blank
 == 289384-1.xhtml 289384-ref.xhtml
-random-if(d2d) fuzzy-if(Android,8,1439) skip-if(styloVsGecko) HTTP == 289480.html#top 289480-ref.html # basically-verbatim acid2 test, HTTP for a 404 page -- bug 578114 for the d2d failures, bug 1354406
+random-if(d2d) fuzzy-if(Android,8,1439) skip-if(styloVsGecko) fuzzy-if(webrender,14-14,88-88) HTTP == 289480.html#top 289480-ref.html # basically-verbatim acid2 test, HTTP for a 404 page -- bug 578114 for the d2d failures, bug 1354406
 == 290129-1.html 290129-1-ref.html
 == 291078-1.html 291078-1-ref.html
 == 291078-2.html 291078-2-ref.html
diff --git a/layout/reftests/css-break/reftest.list b/layout/reftests/css-break/reftest.list
index 770fc68f7230..3878ee87d5a4 100644
--- a/layout/reftests/css-break/reftest.list
+++ b/layout/reftests/css-break/reftest.list
@@ -1,7 +1,7 @@
 default-preferences pref(layout.css.box-decoration-break.enabled,true)
 
 == box-decoration-break-1.html box-decoration-break-1-ref.html
-fuzzy(1,20) fuzzy-if(skiaContent,1,700) fuzzy-if(webrender,7-7,316-316) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
+fuzzy(1,20) fuzzy-if(skiaContent,1,700) fuzzy-if(webrender,8-8,242-242) == box-decoration-break-with-inset-box-shadow-1.html box-decoration-break-with-inset-box-shadow-1-ref.html
 fuzzy(45,460) fuzzy-if(skiaContent,57,439) fuzzy-if(Android,57,1330) fuzzy-if(styloVsGecko,45,1410) == box-decoration-break-with-outset-box-shadow-1.html box-decoration-break-with-outset-box-shadow-1-ref.html # Bug 1386543
 random-if(!gtkWidget) HTTP(..) == box-decoration-break-border-image.html box-decoration-break-border-image-ref.html
 == box-decoration-break-block-border-padding.html box-decoration-break-block-border-padding-ref.html
diff --git a/layout/reftests/transform-3d/reftest.list b/layout/reftests/transform-3d/reftest.list
index fa05ad389d51..fa5f282f7d01 100644
--- a/layout/reftests/transform-3d/reftest.list
+++ b/layout/reftests/transform-3d/reftest.list
@@ -36,7 +36,7 @@ fuzzy-if(webrender,0-1,0-6) == rotate3d-2a.html rotatey-1-ref.html
 != backface-visibility-1a.html about:blank
 == backface-visibility-1b.html about:blank
 == backface-visibility-1c.html about:blank
-fuzzy-if(winWidget&&!layersGPUAccelerated,1,251) fuzzy-if(webrender,1-1,13-13) == backface-visibility-2.html backface-visibility-2-ref.html
+fuzzy-if(winWidget&&!layersGPUAccelerated,1,251) == backface-visibility-2.html backface-visibility-2-ref.html
 == backface-visibility-3.html backface-visibility-3-ref.html
 == perspective-clipping-1.html perspective-clipping-1-ref.html
 == perspective-clipping-2.html perspective-clipping-2-ref.html