diff --git a/addons/website_slides/static/src/js/slides_course_fullscreen_player.js b/addons/website_slides/static/src/js/slides_course_fullscreen_player.js
index f8c34ee222f..3a8d0165a52 100644
--- a/addons/website_slides/static/src/js/slides_course_fullscreen_player.js
+++ b/addons/website_slides/static/src/js/slides_course_fullscreen_player.js
@@ -7,6 +7,8 @@ odoo.define('website_slides.fullscreen', function (require) {
     var core = require('web.core');
     var QWeb = core.qweb;
 
+    var session = require('web.session');
+
     var Quiz = require('website_slides.quiz');
 
 
@@ -485,7 +487,7 @@ odoo.define('website_slides.fullscreen', function (require) {
                 self.$('.o_wslides_fs_slide_title').html(QWeb.render('website.slides.fullscreen.title', {widget: self}));
                 return self._renderSlide();
             }).then(function() {
-                if (slide._autoSetDone) {
+                if (slide._autoSetDone && !session.is_website_user) {  // no useless RPC call
                     self._setCompleted(slide.id);
                 }
                 self._pushUrlState();
@@ -512,8 +514,10 @@ odoo.define('website_slides.fullscreen', function (require) {
          * @private
          */
         _onSlideCompleted: function (ev) {
-            var slideId = ev.data.id;
-            this._setCompleted(slideId);
+            if (!session.is_website_user) {  // no useless RPC call
+                var slideId = ev.data.id;
+                this._setCompleted(slideId);
+            }
         },
         /**
          * Go the next slide
diff --git a/addons/website_slides/views/website_slides_templates_lesson.xml b/addons/website_slides/views/website_slides_templates_lesson.xml
index 67338fbe190..225d3ecdc48 100644
--- a/addons/website_slides/views/website_slides_templates_lesson.xml
+++ b/addons/website_slides/views/website_slides_templates_lesson.xml
@@ -18,7 +18,7 @@
                                     class="text-white"
                                     t-field="slide.channel_id.name"/>
                             </h3>
-                            <div class="d-flex align-items-center">
+                            <div t-if="not is_public_user" class="d-flex align-items-center">
                                 <div class="progress w-50" style="height: 8px;">
                                     <div class="progress-bar rounded" role="progressbar"
                                         t-att-aria-valuenow="slide.channel_id.completion" aria-valuemin="0" aria-valuemax="100"
diff --git a/addons/website_slides/views/website_slides_templates_lesson_fullscreen.xml b/addons/website_slides/views/website_slides_templates_lesson_fullscreen.xml
index 8285a76bacd..43874d74224 100644
--- a/addons/website_slides/views/website_slides_templates_lesson_fullscreen.xml
+++ b/addons/website_slides/views/website_slides_templates_lesson_fullscreen.xml
@@ -35,7 +35,7 @@
                         <a t-attf-href="/slides/#{slug(slide.channel_id)}">
                             <span class="h3" t-field="slide.channel_id.name"/>
                         </a>
-                        <div class="mt-2">
+                        <div t-if="not is_public_user" class="mt-2">
                             <div class="progress">
                                 <div class="progress-bar" role="progressbar" t-attf-style="width: #{slide.channel_id.completion}%" t-att-aria-valuenow="slide.channel_id.completion" aria-valuemin="0" aria-valuemax="100"></div>
                             </div>