Index: conditional_fields.module
===================================================================
--- conditional_fields.module	(revision 15789)
+++ conditional_fields.module	(revision 16446)
@@ -369,6 +369,10 @@
     if (!$allowed_values[$field['field_name']] = conditional_fields_allowed_values($field)) {
       continue;
     }
+    // - Exclude field with too much allowed values
+    if (count($allowed_values[$field['field_name']]) > 100) {
+      continue;
+    }
     // If a field is inside a controlled group, it can control or be controlled only by fields in the same group.
     // This is needed to avoid uncontrollable loops.
     // First we gather data about groups