diff --git a/config/orthanc/stone.json b/config/orthanc/stone.json
index 6740d49..3217d51 100644
--- a/config/orthanc/stone.json
+++ b/config/orthanc/stone.json
@@ -2,6 +2,12 @@
   "StoneWebViewer": {
     "DateFormat": "DD/MM/YYYY",
     "PrintEnabled": false,
+    "CombinedToolEnabled": true,
+    "CombinedToolBehaviour": {
+      "LeftMouseButton": "Windowing",
+      "MiddleMouseButton": "Pan",
+      "RightMouseButton": "Zoom"
+    },
     "DownloadAsJpegEnabled": false,
     "DownloadStudyEnabled": false,
     "DownloadDicomDir": false,
@@ -9,6 +15,6 @@
     "ShowInfoPanelAtStartup": "Never",
     "ShowUserPreferencesButton": true,
     "ShowNotForDiagnosticUsageDisclaimer": false,
-    "DicomCacheSize": 2048
+    "DicomCacheSize": 256
   }
 }
\ No newline at end of file