diff --git a/architype.js b/architype.js
index f9d7d52..f15d3c3 100644
--- a/architype.js
+++ b/architype.js
@@ -420,10 +420,9 @@ class Architype {
 
   iterate(graph) {
     this.sortByMostTension(graph.nodes);
+    let newPos = null;
+    let newTension = this.getTotalTension(graph.nodes);
     for (let node of graph.nodes) {
-      let newPos = null;
-      let newTension = node.tension;
-
       let origPos = node.pos;
       let offsets = new Map();
       let addOffset = (x, y) => {
@@ -440,8 +439,9 @@ class Architype {
         if (graph.nodesByPos.has(testPos.toString())) {
           continue;
         }
-        let testVec = this.findVec(testPos, node.affinity);
-        let testTension = this.findTension(testVec);
+        node.pos = testPos;
+        let testTension = this.getTotalTension(graph.nodes);
+        node.pos = origPos;
         if (testTension < newTension) {
           newPos = testPos;
           newTension = testTension;