diff --git a/js/headless/bulktest.mjs b/js/headless/bulktest.mjs
index e33f177..90dedc0 100644
--- a/js/headless/bulktest.mjs
+++ b/js/headless/bulktest.mjs
@@ -207,7 +207,9 @@ async function test_pack(pack, ruleset, level_filter = null) {
                     record_result('failure', "Lost", true);
                     break;
                 }
-                else if (level.tic_counter >= replay.duration + 200) {
+                else if (level.tic_counter >= replay.duration + 220) {
+                    // This threshold of 11 seconds was scientifically calculated by noticing that
+                    // the TWS of Southpole runs 11 seconds past its last input
                     record_result('short', "Out of input", true);
                     break;
                 }
diff --git a/js/main.js b/js/main.js
index 57da8d3..943dbba 100644
--- a/js/main.js
+++ b/js/main.js
@@ -3303,7 +3303,9 @@ class PackTestDialog extends DialogOverlay {
                         record_result('failure', "Lost", true);
                         break;
                     }
-                    else if (level.tic_counter >= replay.duration + 200) {
+                    else if (level.tic_counter >= replay.duration + 220) {
+                        // This threshold of 11 seconds was scientifically calculated by noticing
+                        // that the TWS of Southpole runs 11 seconds past its last input
                         record_result('short', "Out of input", true);
                         break;
                     }