diff --git a/index.php b/index.php
index 9d224f3..735e443 100644
--- a/index.php
+++ b/index.php
@@ -53,30 +53,34 @@
                 const citation = document.createElement('blockquote');
                 citation.innerText = formulaireData.get('question');
                 conversation.appendChild(citation);
-                
                 formulaire.reset();
-                const requete = await fetch(formulaire.action, {
-                    method: formulaire.method,
-                    body: formulaireData
-                });
 
                 const paragraphe = document.createElement('p');
                 paragraphe.setAttribute('aria-busy', 'true');
                 conversation.appendChild(paragraphe);
-                const reponse = await requete.text();
-                paragraphe.setAttribute('aria-busy', 'false');
-                Array.from(reponse).forEach((lettre, i) => {
-                    setTimeout(() => {
-                        if (lettre == "\n") paragraphe.innerHTML += "<br>";
-                        else paragraphe.innerHTML += lettre;
-                    }, i * 40);
+
+                const requete = await fetch(formulaire.action, {
+                    method: formulaire.method,
+                    body: formulaireData
                 });
-                setTimeout(() => {
-                    conversation.innerHTML += "<p>😸 Voulez-vous que je réponde à une autre question ?</p>";
-                    conversation.scrollTop = conversation.scrollHeight;
-                    bouton.disabled = false;
-                    bouton.setAttribute("aria-busy", false);
-                }, reponse.length * 40);
+                paragraphe.setAttribute('aria-busy', 'false');
+
+                const reader = requete.body.getReader();
+                const decoder = new TextDecoder("utf-8");
+
+                while (true) {
+                    const { value, done } = await reader.read();
+                    if (done) break;
+                    const lettre = decoder.decode(value, { stream: true });
+                    if (lettre == "\n") paragraphe.innerHTML += "<br>";
+                    else paragraphe.innerHTML += lettre;
+                    await new Promise(r => setTimeout(r, 0)); // micro pause pour rendre l'UI responsive
+                }
+
+                conversation.innerHTML += "<p>😸 Voulez-vous que je réponde à une autre question ?</p>";
+                conversation.scrollTop = conversation.scrollHeight;
+                bouton.disabled = false;
+                bouton.setAttribute("aria-busy", false);
             });
         </script>
     </body>
diff --git a/question.php b/question.php
index 3e8e956..6c468a9 100644
--- a/question.php
+++ b/question.php
@@ -1 +1,20 @@
-<?php echo `python markov.py`; ?>
\ No newline at end of file
+<?php
+header('Content-Type: text/plain; charset=utf-8');
+header('Cache-Control: no-cache'); // pour éviter le buffering du navigateur
+header('X-Accel-Buffering: no');  // si nginx, pour désactiver le buffering
+
+$reponse = `python markov.py`;
+
+// désactiver le buffering PHP
+@ini_set('output_buffering', 'off');
+@ini_set('zlib.output_compression', 'off');
+while (ob_get_level()) ob_end_flush();
+flush();
+
+// envoyer chaque lettre avec un délai
+$len = strlen($reponse);
+for ($i = 0; $i < $len; $i++) {
+    echo $reponse[$i];
+    flush();          // forcer l'envoi immédiat
+    usleep(40000);    // 40ms = 40000 microsecondes
+}
\ No newline at end of file