Use the same read limit for children

src/model.js

@@ -443,11 +443,7 @@
 
             var context = jQuery.extend({}, this.get_context());
             if (loading == 'eager') {
-                var limit = Sao.config.limit;
-                if (!this.group.parent) {
-                    // If not a children no need to load too much
-                    limit = parseInt(limit / fnames_to_fetch.length, 10);
-                }
+                var limit = parseInt(limit / fnames_to_fetch.length, 10);
 
                 var filter_group = function(record) {
                     return !(name in record._loaded) && (record.id >= 0);