diff --git a/src_data/pages/settings.html b/src_data/pages/settings.html
index 2240cac..2c36304 100644
--- a/src_data/pages/settings.html
+++ b/src_data/pages/settings.html
@@ -796,6 +796,10 @@
           maxTemp: null
         };
 
+        const hasNeedDecimationChart = () => {
+          return window.innerWidth <= 800;
+        }
+
         const makeEquithermChart = () => {
           if (etChart == null) {
             const ctx = document.getElementById('etChart').getContext('2d');
@@ -830,6 +834,7 @@
                 },
                 options: {
                   responsive: true,
+                  resizeDelay: 500,
                   parsing: false,
                   interaction: {
                     mode: 'nearest',
@@ -850,7 +855,7 @@
                       display: false
                     },
                     decimation: {
-                      enabled: false,
+                      enabled: hasNeedDecimationChart(),
                       algorithm: 'lttb',
                       samples: 30,
                       threshold: 30
@@ -1202,9 +1207,8 @@
           if (etChart) {
             etChart.resize();
             
-            const decimation = window.innerWidth <= 800;
-            if (etChart.options.plugins.decimation.enabled != decimation) {
-              etChart.options.plugins.decimation.enabled = decimation;
+            if (etChart.options.plugins.decimation.enabled != hasNeedDecimationChart()) {
+              etChart.options.plugins.decimation.enabled = hasNeedDecimationChart();
               etChart.update();
             }
           }
diff --git a/src_data/scripts/utils.js b/src_data/scripts/utils.js
index d758a73..bb6a190 100644
--- a/src_data/scripts/utils.js
+++ b/src_data/scripts/utils.js
@@ -5,8 +5,13 @@ const setupForm = (formSelector, onResultCallback = null, noCastItems = []) => {
   }
 
   form.querySelectorAll('input').forEach(item => {
-    item.addEventListener('change', (e) => {
-      e.target.setAttribute('aria-invalid', !e.target.checkValidity());
+    item.addEventListener('change', (event) => {
+      if (!event.target.checkValidity()) {
+        event.target.setAttribute('aria-invalid', true);
+
+      } else if (event.target.hasAttribute('aria-invalid')) {
+        event.target.removeAttribute('aria-invalid');
+      }
     })
   });
 
@@ -650,7 +655,7 @@ const setRadioValue = (selector, value, parent = undefined) => {
     const checked = item.value == value;
     if (item.checked != checked) {
       item.checked = checked;
-      
+
       setTimeout(() => {
         item.dispatchEvent(new Event("change"));
       }, 10);