See #9 Added hpet options.

index.html

@@ -104,6 +104,17 @@
       <label><input class="uk-checkbox" type="checkbox" id="apply_last_settings_on_launch"> When checked, Ryzen Controller will try to apply latest used settings on launch.</label>
       <h3>Minimize to tray:</h3>
       <label><input class="uk-checkbox" type="checkbox" id="minimize_to_tray"> When checked, Ryzen Controller will minimize to tray instead of taskbar.</label>
+      <h3 class="windows-only">HPET:</h3>
+      <p class="uk-margin windows-only">
+        High Precision Event Timer: Allow application to get time with precision below microseconds, but is slower than most other other timer facilities.<br/>
+        Try running benchmark with and without to see if you get any difference.<br/>
+        If it doesn't make any difference, it's recommanded to let it enable.<br/>
+        <em>You must reboot to apply changes.</em>
+      </p>
+      <p class="uk-margin windows-only">
+        <button class="uk-button uk-button-primary" onClick="toggleHpet('true')">Enable</button>
+        <button class="uk-button uk-button-secondary" onClick="toggleHpet('false')">Disable</button>
+      </p>
       <h3>Re-apply ryzenadj periodically:</h3>
       <p>Ryzen Controller will re-apply ryzenadj every X seconds. Set to 0 to disable.</p>
       <div class="uk-grid-small" uk-grid>

js/app.js

@@ -12,6 +12,7 @@ ready(function(){
   if (require('os').platform() === 'win32') {
     recreateShortcut();
   }
+  handlePlatformSpecificDisplay();
   updatePresetList();
   checkForNewRelease();
   document.isStarting = false;

js/methods.js

@@ -75,8 +75,8 @@ function checkForAdminRights() {
       );
     }
   } else {
-  var exec = require('child_process').exec;
+  const child = require('child_process').execFile;
-  exec('NET SESSION', function(err,so,se) {
+  child('NET SESSION', function(err,so,se) {
     if (se.length !== 0) {
       notification('warning',
         `Warning: you should launch this app as administrator, `
@@ -482,3 +482,39 @@ function checkForNewRelease() {
 
   request.send();
 }
+
+/**
+ * Will change the BCD entry value for userplatformclock.
+ *
+ * @param {string} value BCD entry value for userplatformclock: "true" or "false".
+ */
+function toggleHpet(value) {
+  value = value === "true" ? "true" : "false";
+  const BcdeditExecutablePath = "C:\\Windows\\system32\\bcdedit.exe";
+  const parameters = [
+    "/set",
+    "useplatformclock",
+    value,
+  ];
+
+  const child = require('child_process').execFile;
+  child(BcdeditExecutablePath, parameters, function(err, data) {
+    var output = data.toString();
+    if (err) {
+      notification('danger', err + '<br/>' + output);
+    }
+    else if (output) {
+      notification('success', 'Bcdedit output:<br/>' + output);
+      saveLatestUsedSettings();
+    }
+  });
+}
+
+function handlePlatformSpecificDisplay() {
+  var windows_only_elements = document.getElementsByClassName('windows-only');
+  if (require('os').platform() !== 'win32') {
+    for (const item of windows_only_elements) {
+      item.setAttribute('hidden', 'true');
+    }
+  }
+}