diff --git a/preferences.xml b/preferences.xml
index b4c7b0dc2..f99b8558e 100644
--- a/preferences.xml
+++ b/preferences.xml
@@ -66,10 +66,10 @@ Started September 2000 by David Megginson, david@megginson.com
 				<renderer>default-pipeline</renderer>
 				<show-buffers type="bool" userarchive="y">false</show-buffers>
 				<ambient-occlusion type="bool" userarchive="y">false</ambient-occlusion>
-				<ambient-occlusion-strength type="float" userarchive="y">1.0</ambient-occlusion-strength>
+				<ambient-occlusion-strength type="float" userarchive="y">0.6</ambient-occlusion-strength>
 				<ambient-occlusion-buffers type="bool">true</ambient-occlusion-buffers>
 				<bloom type="bool" userarchive="y">true</bloom>
-				<bloom-strength type="float" userarchive="y">1.0</bloom-strength>
+				<bloom-strength type="float" userarchive="y">0.6</bloom-strength>
 				<bloom-buffers type="bool">true</bloom-buffers>
 				<night-vision type="bool">false</night-vision>
 				<cinema>
@@ -104,7 +104,7 @@ Started September 2000 by David Megginson, david@megginson.com
 				</cinema>
 				<exposure type="float" userarchive="y">1.0</exposure>
 				<use-color-for-depth type="bool">false</use-color-for-depth>
-				<no-16bit-buffer type="bool">true</no-16bit-buffer>
+				<no-16bit-buffer type="bool">false</no-16bit-buffer>
 				<debug-buffer n="0">
 					<enabled type="bool" userarchive="y">false</enabled>
 					<name userarchive="y"></name>
@@ -229,13 +229,13 @@ Started September 2000 by David Megginson, david@megginson.com
 			<shadows>
 				<enabled type="bool" userarchive="y">true</enabled>
 				<debug type="bool" userarchive="y">false</debug>
-				<map-size type="int">4096</map-size>
+				<map-size type="int" userarchive="y">2048</map-size>
 				<num-cascades type="int" userarchive="y">4</num-cascades>
-				<cascade-far-m index="0" type="float" userarchive="y">5.0</cascade-far-m>
-				<cascade-far-m index="1" type="float" userarchive="y">50.0</cascade-far-m>
-				<cascade-far-m index="2" type="float" userarchive="y">500.0</cascade-far-m>
-				<cascade-far-m index="3" type="float" userarchive="y">5000.0</cascade-far-m>
-				<filtering type="int" userarchive="y">2</filtering>
+				<cascade-far-m index="0" type="float" userarchive="y">2.0</cascade-far-m>
+				<cascade-far-m index="1" type="float" userarchive="y">8.0</cascade-far-m>
+				<cascade-far-m index="2" type="float" userarchive="y">32.0</cascade-far-m>
+				<cascade-far-m index="3" type="float" userarchive="y">128.0</cascade-far-m>
+				<filtering type="int" userarchive="y">1</filtering>
 			</shadows>
 			<shader-experimental type="bool" userarchive="y">false</shader-experimental>
 			<shader-effects type="bool" userarchive="y">true</shader-effects>