using 1GB heap size on 32 bit windows systems, due to http://www.oracle.com/technetwork/java/hotspotfaq-138619.html#gc_heap_32bit

main/installer-win-portable/pom.xml

@@ -70,7 +70,7 @@
 									<fx:platform javafx="2.2+" j2se="8.0">
 										<fx:property name="settingsPath" value="./settings.json" />
 										<fx:property name="logPath" value="cryptomator.log" />
-										<fx:jvmarg value="-Xmx2048m"/>
+										<fx:jvmarg value="-Xmx1024m"/>
 									</fx:platform>
 									<fx:resources>
 										<fx:fileset dir="${project.build.directory}" type="jar" includes="Cryptomator-${project.parent.version}.jar"/>

main/installer-win/pom.xml

@@ -69,7 +69,7 @@
 									<fx:info title="${javafx.application.name}" vendor="cryptomator.org" copyright="cryptomator.org" license="MIT" category="Utility" />
 									<fx:platform javafx="2.2+" j2se="8.0" >
 										<fx:property name="logPath" value="%appdata%/Cryptomator/cryptomator.log" />
-										<fx:jvmarg value="-Xmx2048m"/>
+										<fx:jvmarg value="-Xmx1024m"/>
 									</fx:platform>
 									<fx:resources>
 										<fx:fileset dir="${project.build.directory}" type="jar" includes="Cryptomator-${project.parent.version}.jar"/>