diff --git a/package.json b/package.json
index b6ba21e..f1bba84 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "real-debrid-downloader",
-  "version": "1.6.1",
+  "version": "1.6.2",
   "description": "Real-Debrid Downloader Desktop (Electron + React + TypeScript)",
   "main": "build/main/main/main.js",
   "author": "Sucukdeluxe",
diff --git a/src/main/download-manager.ts b/src/main/download-manager.ts
index fb9facf..f81dfea 100644
--- a/src/main/download-manager.ts
+++ b/src/main/download-manager.ts
@@ -242,7 +242,10 @@ function isUnrestrictFailure(errorText: string): boolean {
   const text = String(errorText || "").toLowerCase();
   return text.includes("unrestrict") || text.includes("mega-web") || text.includes("mega-debrid")
     || text.includes("bestdebrid") || text.includes("alldebrid") || text.includes("kein debrid")
-    || text.includes("session") || text.includes("login");
+    || text.includes("session-cookie") || text.includes("session cookie") || text.includes("session blockiert")
+    || text.includes("session expired") || text.includes("invalid session")
+    || text.includes("login ungültig") || text.includes("login liefert")
+    || text.includes("login required") || text.includes("login failed");
 }
 
 function isProviderBusyUnrestrictError(errorText: string): boolean {
@@ -4864,6 +4867,8 @@ export class DownloadManager extends EventEmitter {
       }
 
       const acceptRanges = (response.headers.get("accept-ranges") || "").toLowerCase().includes("bytes");
+      let preAllocated = false;
+      let written = 0;
       try {
         if (existingBytes === 0) {
           const rawHeaderName = parseContentDispositionFilename(response.headers.get("content-disposition")).trim();
@@ -4919,7 +4924,6 @@ export class DownloadManager extends EventEmitter {
         await fs.promises.mkdir(path.dirname(effectiveTargetPath), { recursive: true });
 
         // Sparse file pre-allocation (Windows only, new files with known size)
-        let preAllocated = false;
         if (writeMode === "w" && item.totalBytes && item.totalBytes > 0 && process.platform === "win32") {
           try {
             const fd = await fs.promises.open(effectiveTargetPath, "w");
@@ -4934,7 +4938,7 @@ export class DownloadManager extends EventEmitter {
           start: preAllocated ? 0 : undefined,
           highWaterMark: STREAM_HIGH_WATER_MARK
         });
-        let written = writeMode === "a" ? existingBytes : 0;
+        written = writeMode === "a" ? existingBytes : 0;
         let windowBytes = 0;
         let windowStarted = nowMs();
         const itemCount = this.itemCount;
@@ -5313,6 +5317,13 @@ export class DownloadManager extends EventEmitter {
         this.emitState();
         return { resumable };
       } catch (error) {
+        // Truncate pre-allocated sparse file to actual written bytes so that
+        // stat.size on the next retry reflects real data, not the pre-allocated size.
+        // Without this, the retry reads stat.size = totalBytes and either sends an
+        // impossible Range header (→ 416 → false complete) or appends to a zero-padded file.
+        if (preAllocated && item.totalBytes && written < item.totalBytes) {
+          try { await fs.promises.truncate(effectiveTargetPath, written); } catch { /* best-effort */ }
+        }
         if (active.abortController.signal.aborted || String(error).includes("aborted:")) {
           throw error;
         }
diff --git a/src/main/extractor.ts b/src/main/extractor.ts
index 2089918..c65b9ad 100644
--- a/src/main/extractor.ts
+++ b/src/main/extractor.ts
@@ -522,7 +522,6 @@ function winRarCandidates(): string[] {
 
   const installed = [
     path.join(programFiles, "WinRAR", "UnRAR.exe"),
-    path.join(programFilesX86, "WinRAR", "UnRAR.exe"),
     path.join(programFilesX86, "WinRAR", "UnRAR.exe")
   ];
 
diff --git a/src/renderer/App.tsx b/src/renderer/App.tsx
index ffda36b..3345d9c 100644
--- a/src/renderer/App.tsx
+++ b/src/renderer/App.tsx
@@ -70,7 +70,7 @@ const emptySnapshot = (): UiSnapshot => ({
     cleanupMode: "none", extractConflictMode: "overwrite", removeLinkFilesAfterExtract: false,
     removeSamplesAfterExtract: false, enableIntegrityCheck: true, autoResumeOnStart: true,
     autoReconnect: false, reconnectWaitSeconds: 45, completedCleanupPolicy: "never",
-    maxParallel: 4, maxParallelExtract: 2, retryLimit: 0, speedLimitEnabled: false, speedLimitKbps: 0, speedLimitMode: "global",
+    maxParallel: 4, maxParallelExtract: 2, extractCpuPriority: "high", retryLimit: 0, speedLimitEnabled: false, speedLimitKbps: 0, speedLimitMode: "global",
     updateRepo: "", autoUpdateCheck: true, clipboardWatch: false, minimizeToTray: false,
     theme: "dark", collapseNewPackages: true, autoSkipExtracted: false, confirmDeleteSelection: true,
     bandwidthSchedules: [], totalDownloadedAllTime: 0,
@@ -2043,14 +2043,20 @@ export function App(): ReactElement {
                   <input
                     type="text"
                     inputMode="decimal"
-                    value={formatMbpsInputFromKbps(settingsDraft.speedLimitKbps)}
+                    value={speedLimitInput}
                     onChange={(e) => {
-                      const parsed = parseMbpsInput(e.target.value);
-                      if (parsed !== null) {
-                        const kbps = Math.floor(parsed * 1024);
-                        setSettingsDraft((prev) => ({ ...prev, speedLimitKbps: kbps }));
-                        void window.rd.updateSettings({ speedLimitKbps: kbps });
+                      setSpeedLimitInput(e.target.value);
+                    }}
+                    onBlur={() => {
+                      const parsed = parseMbpsInput(speedLimitInput);
+                      if (parsed === null) {
+                        setSpeedLimitInput(formatMbpsInputFromKbps(settingsDraft.speedLimitKbps));
+                        return;
                       }
+                      const kbps = Math.floor(parsed * 1024);
+                      setSettingsDraft((prev) => ({ ...prev, speedLimitKbps: kbps }));
+                      void window.rd.updateSettings({ speedLimitKbps: kbps });
+                      setSpeedLimitInput(formatMbpsInputFromKbps(kbps));
                     }}
                   />
                   <div className="menu-spinner-arrows">
@@ -2059,12 +2065,14 @@ export function App(): ReactElement {
                       const next = Math.floor((cur + 1) * 1024);
                       setSettingsDraft((prev) => ({ ...prev, speedLimitKbps: next }));
                       void window.rd.updateSettings({ speedLimitKbps: next });
+                      setSpeedLimitInput(formatMbpsInputFromKbps(next));
                     }}>&#9650;</button>
                     <button onClick={() => {
                       const cur = (settingsDraft.speedLimitKbps || 0) / 1024;
                       const next = Math.max(0, Math.floor((cur - 1) * 1024));
                       setSettingsDraft((prev) => ({ ...prev, speedLimitKbps: next }));
                       void window.rd.updateSettings({ speedLimitKbps: next });
+                      setSpeedLimitInput(formatMbpsInputFromKbps(next));
                     }}>&#9660;</button>
                   </div>
                 </div>
@@ -2625,7 +2633,7 @@ export function App(): ReactElement {
                       </div>
                     </div>
                     <label className="toggle-line"><input type="checkbox" checked={settingsDraft.autoReconnect} onChange={(e) => setBool("autoReconnect", e.target.checked)} /> Automatischer Reconnect</label>
-                    <div><label>Reconnect-Wartezeit (Sek.)</label><input type="number" min={10} max={600} value={settingsDraft.reconnectWaitSeconds} onChange={(e) => setNum("reconnectWaitSeconds", Number(e.target.value) || 45)} /></div>
+                    <div><label>Reconnect-Wartezeit (Sek.)</label><input type="number" min={10} max={600} value={settingsDraft.reconnectWaitSeconds} onChange={(e) => setNum("reconnectWaitSeconds", Math.max(10, Math.min(600, Number(e.target.value) || 45)))} /></div>
                     <h4>Bandbreitenplanung</h4>
                     {schedules.map((s, i) => {
                       const scheduleKey = s.id || `schedule-${i}`;