diff --git a/server/services/monitoringService.js b/server/services/monitoringService.js
index 4f60992..27b8a7a 100644
--- a/server/services/monitoringService.js
+++ b/server/services/monitoringService.js
@@ -22,7 +22,6 @@ angular.module('ffffng')
 ) {
     var MONITORING_STATE_MACS_CHUNK_SIZE = 100;
     var MONITORING_MAILS_DB_BATCH_SIZE = 50;
-    var MONITORING_MAX_PARALLEL_NODE_IMPORTS = 20;
     var MONITORING_OFFLINE_MAILS_SCHEDULE = {
         1: { amount: 3, unit: 'hours' },
         2: { amount: 1, unit: 'days' },
@@ -532,9 +531,10 @@ angular.module('ffffng')
                     }
                     previousImportTimestamp = data.importTimestamp;
 
-                    async.eachLimit(
+                    // We do not parallelize here as the sqlite will start slowing down and blocking with too many
+                    // parallel queries. This has resulted in blocking other requests too and thus in a major slowdonw.
+                    async.eachSeries(
                         data.nodes,
-                        MONITORING_MAX_PARALLEL_NODE_IMPORTS,
                         function (nodeData, nodeCallback) {
                             Logger.tag('monitoring', 'information-retrieval').debug('Importing: %s', nodeData.mac);