diff --git a/docker/php.ini b/docker/php.ini
index 81297f7..cc0de64 100644
--- a/docker/php.ini
+++ b/docker/php.ini
@@ -1,3 +1,5 @@
-upload_max_filesize = 20M
-post_max_size = 25M
-memory_limit = 256M
+upload_max_filesize = 300M
+post_max_size = 310M
+memory_limit = 512M
+max_execution_time = 120
+max_input_time = 120
diff --git a/modules/printvault/api.php b/modules/printvault/api.php
index 36f481d..70dc2e0 100644
--- a/modules/printvault/api.php
+++ b/modules/printvault/api.php
@@ -241,7 +241,7 @@ if ($action === 'models') {
 // ── GCODE PATHS ────────────────────────────────────────────────────────────────
 if ($action === 'gcode_paths') {
     $id     = (int)($_GET['id'] ?? 0);
-    $max    = min((int)($_GET['max'] ?? 300000), 500000);
+    $max    = (int)($_GET['max'] ?? 0) ?: PHP_INT_MAX; // no cap by default
     $s = $pdo->prepare("SELECT filename, file_type FROM pf_pv_models WHERE id=?"); $s->execute([$id]);
     $row = $s->fetch(); if (!$row) pvErr('Introuvable', 404);
     $ext = strtolower($row['file_type']);
@@ -251,7 +251,7 @@ if ($action === 'gcode_paths') {
 
     $segments = [];
     $x=0.0; $y=0.0; $z=0.0; $e=0.0; $lastE=0.0;
-    $minZ=PHP_FLOAT_MAX; $maxZ=0.0;
+    $minZ=PHP_FLOAT_MAX; $maxZ=0.0; $count=0;
 
     $handle = fopen($path, 'r');
     while (!feof($handle) && count($segments) < $max) {
@@ -272,15 +272,19 @@ if ($action === 'gcode_paths') {
         if (preg_match('/E([-\d.]+)/i', $line, $m)) $ne = (float)$m[1];
         $extruding = ($cmd === 'G1' && $ne > $lastE) ? 1 : 0;
         if ($nx !== $x || $ny !== $y || $nz !== $z) {
-            $segments[] = [$x, $y, $z, $nx, $ny, $nz, $extruding];
+            // Compact flat array: x1,y1,z1,x2,y2,z2,ext (2 decimal precision)
+            $segments[] = round($x,2); $segments[] = round($y,2); $segments[] = round($z,2);
+            $segments[] = round($nx,2); $segments[] = round($ny,2); $segments[] = round($nz,2);
+            $segments[] = $extruding;
             $minZ = min($minZ, $nz);
             $maxZ = max($maxZ, $nz);
+            $count++;
         }
         $x=$nx; $y=$ny; $z=$nz;
         if ($ne !== $e) { $lastE = $e = $ne; }
     }
     fclose($handle);
-    pvOk(['segments' => $segments, 'min_z' => $minZ === PHP_FLOAT_MAX ? 0 : $minZ, 'max_z' => $maxZ, 'total' => count($segments)]);
+    pvOk(['flat' => $segments, 'min_z' => round($minZ === PHP_FLOAT_MAX ? 0 : $minZ, 2), 'max_z' => round($maxZ, 2), 'total' => $count]);
 }
 
 // ── FILE SERVE ─────────────────────────────────────────────────────────────────
diff --git a/printvault-viewer.php b/printvault-viewer.php
index 11221e9..c63db0a 100644
--- a/printvault-viewer.php
+++ b/printvault-viewer.php
@@ -307,53 +307,51 @@ function zToColor(z, minZ, maxZ) {
 
 document.getElementById('viewer-loading-text').textContent = 'Chargement des trajectoires…';
 
-fetch('/modules/printvault/api.php?action=gcode_paths&id=<?= $id ?>&max=300000', {
+document.getElementById('viewer-loading-text').textContent = 'Parsing GCode…';
+
+fetch('/modules/printvault/api.php?action=gcode_paths&id=<?= $id ?>', {
     credentials: 'same-origin',
     headers: {'X-Requested-With':'XMLHttpRequest','Accept':'application/json'}
 })
 .then(r => r.json())
 .then(j => {
     if (!j.ok) { document.getElementById('viewer-loading-text').textContent = j.error; return; }
-    const {segments, min_z, max_z} = j.data;
+    const {flat, min_z, max_z, total} = j.data;
 
-    // Separate extrusion and travel moves
-    const extPositions   = [];
-    const extColors      = [];
-    const travelPositions = [];
+    document.getElementById('viewer-loading-text').textContent = 'Construction du rendu…';
 
-    segments.forEach(([x1,y1,z1, x2,y2,z2, ext]) => {
+    // flat = [x1,y1,z1,x2,y2,z2,ext, x1,y1,z1,...] stride 7
+    const extPos=[], extCol=[], travPos=[];
+    for (let i=0; i < flat.length; i+=7) {
+        const x1=flat[i],y1=flat[i+1],z1=flat[i+2];
+        const x2=flat[i+3],y2=flat[i+4],z2=flat[i+5];
+        const ext=flat[i+6];
         if (ext) {
             const col = zToColor(z1, min_z, max_z);
-            extPositions.push(x1,z1,-y1, x2,z2,-y2);  // swap Y/Z for Three.js
-            extColors.push(col.r,col.g,col.b, col.r,col.g,col.b);
+            extPos.push(x1,z1,-y1, x2,z2,-y2);
+            extCol.push(col.r,col.g,col.b, col.r,col.g,col.b);
         } else {
-            travelPositions.push(x1,z1,-y1, x2,z2,-y2);
+            travPos.push(x1,z1,-y1, x2,z2,-y2);
         }
-    });
+    }
 
     const group = new THREE.Group();
-
-    if (extPositions.length) {
+    if (extPos.length) {
         const geo = new THREE.BufferGeometry();
-        geo.setAttribute('position', new THREE.Float32BufferAttribute(extPositions, 3));
-        geo.setAttribute('color',    new THREE.Float32BufferAttribute(extColors, 3));
-        const mat = new THREE.LineBasicMaterial({vertexColors: true, linewidth: 1});
-        group.add(new THREE.LineSegments(geo, mat));
+        geo.setAttribute('position', new THREE.Float32BufferAttribute(extPos, 3));
+        geo.setAttribute('color',    new THREE.Float32BufferAttribute(extCol, 3));
+        group.add(new THREE.LineSegments(geo, new THREE.LineBasicMaterial({vertexColors:true})));
     }
-    if (travelPositions.length) {
+    if (travPos.length) {
         const geo = new THREE.BufferGeometry();
-        geo.setAttribute('position', new THREE.Float32BufferAttribute(travelPositions, 3));
-        const mat = new THREE.LineBasicMaterial({color: 0x334155, linewidth: 1, transparent: true, opacity: 0.3});
-        group.add(new THREE.LineSegments(geo, mat));
+        geo.setAttribute('position', new THREE.Float32BufferAttribute(travPos, 3));
+        group.add(new THREE.LineSegments(geo, new THREE.LineBasicMaterial({color:0x334155,transparent:true,opacity:0.25})));
     }
 
     scene.add(group);
     fitCamera(group);
     document.getElementById('viewer-loading').style.display = 'none';
-
-    const total = segments.length;
-    const extCount = segments.filter(s=>s[6]).length;
-    document.getElementById('viewer-loading-text').textContent = `${total.toLocaleString()} segments (${extCount.toLocaleString()} extrusion)`;
+    document.getElementById('viewer-loading-text').textContent = `${total.toLocaleString()} segments`;
 })
 .catch(err => { document.getElementById('viewer-loading-text').textContent = 'Erreur: '+err.message; });