diff --git a/Downloader/res/language/en_us.json b/Downloader/res/language/en_us.json
index d89594c..630b9c0 100644
--- a/Downloader/res/language/en_us.json
+++ b/Downloader/res/language/en_us.json
@@ -108,5 +108,6 @@
   "VersionCheckFailed": "Cannot check latest version! code:%d",
   "CurrentVersion": "Current Version: %s(%d)",
   "GotoDownload": "Goto Download",
-  "CheckUpdate": "Check Update"
+  "CheckUpdate": "Check Update",
+  "AlreadyHasDownloadTask": "Already has download task: %d %s-%s [%s]"
 }
\ No newline at end of file
diff --git a/Downloader/res/language/zh_cn.json b/Downloader/res/language/zh_cn.json
index e11e2ab..bb8276e 100644
--- a/Downloader/res/language/zh_cn.json
+++ b/Downloader/res/language/zh_cn.json
@@ -108,5 +108,6 @@
   "VersionCheckFailed": "版本更新检查失败！代码：%d",
   "CurrentVersion": "当前版本：%s(%d)",
   "GotoDownload": "前往下载",
-  "CheckUpdate": "检查更新"
+  "CheckUpdate": "检查更新",
+  "AlreadyHasDownloadTask": "已存在的下载任务：%d %s-%s [%s]"
 }
\ No newline at end of file
diff --git a/Downloader/src/features/DownloadQueue.cpp b/Downloader/src/features/DownloadQueue.cpp
index 90641b3..353f576 100644
--- a/Downloader/src/features/DownloadQueue.cpp
+++ b/Downloader/src/features/DownloadQueue.cpp
@@ -1,7 +1,6 @@
 #include "pch.h"
 #include "DownloadQueue.h"
 
-#include <ranges>
 #include <set>
 
 #include "Downloader.h"
@@ -13,7 +12,7 @@ namespace features {
 std::set<int> removed{};
 
 void DownloadQueue::cancel(const int sid) const {
-    if (!m_InQueueMap.contains(sid)) {
+    if (const auto iter = findTaskBySid(sid); iter == m_TaskQueueSet.end()) {
         LOGW("No download task: %d", sid);
         return;
     }
@@ -24,45 +23,37 @@ void DownloadQueue::cancel(const int sid) const {
 bool DownloadQueue::addTask(const osu::Beatmap &bm) {
     std::unique_lock _g(m_Mutex);
 
-    if (m_InQueueMap.contains(bm.sid)) {
+    if (const auto iter = findTaskBySid(bm.sid); iter != m_TaskQueueSet.end()) {
         LOGW("Already has download task: %d %s-%s (%s)", bm.sid, bm.artist.c_str(), bm.title.c_str(), bm.author.c_str());
         return false;
     }
-    m_InQueueMap.insert({
-        bm.sid, DownloadTask{
-            .bm = bm
-        }
+    m_TaskQueueSet.insert(DownloadTask{
+        .bm = bm,
+        .insertTime = GetTickCount64(),
     });
 
     return true;
 }
 
 DownloadTask *DownloadQueue::getTask(const osu::Beatmap &bm) {
-    std::shared_lock _g(m_Mutex);
-    if (m_InQueueMap.contains(bm.sid)) {
-        auto &ret = m_InQueueMap[bm.sid];
-        ret.started = true;
-        return &ret;
-    }
-
-    return nullptr;
+    return getTask(bm.sid);
 }
 
 DownloadTask *DownloadQueue::getTask(int sid) {
-    std::shared_lock _g(m_Mutex);
-    if (m_InQueueMap.contains(sid)) {
-        auto &ret = m_InQueueMap[sid];
-        ret.started = true;
-        return &ret;
+    std::unique_lock _g(m_Mutex);
+    if (const auto iter = findTaskBySid(sid); iter != m_TaskQueueSet.end()) {
+        auto *ret = &const_cast<DownloadTask &>(*iter);
+        ret->started = true;
+        return ret;
     }
 
     return nullptr;
 }
 
-void DownloadQueue::notifyFinished(int sid) {
+void DownloadQueue::notifyFinished(const int sid) {
     std::unique_lock _g(m_Mutex);
-    if (m_InQueueMap.contains(sid)) {
-        m_InQueueMap.erase(sid);
+    if (const auto iter = findTaskBySid(sid); iter != m_TaskQueueSet.end()) {
+        m_TaskQueueSet.erase(iter);
     }
     Downloader::RemoveCancelDownload(sid);
 }
@@ -98,48 +89,28 @@ void DownloadQueue::drawTaskItem(const DownloadTask &item) const {
 void DownloadQueue::drawMain() {
     auto &lang = i18n::I18nManager::GetInstance();
 
-    std::shared_lock _g(m_Mutex);
+    {
+        std::shared_lock _g(m_Mutex);
 
-    if (m_InQueueMap.empty()) {
-        ImGui::SetCursorPosX((ImGui::GetWindowSize().x - ImGui::CalcTextSize(lang.getTextCStr("Empty")).x) * 0.5f);
-        ImGui::SetCursorPosY((ImGui::GetWindowSize().y - ImGui::CalcTextSize(lang.getTextCStr("Empty")).y) * 0.5f);
-        ImGui::Text(lang.getTextCStr("Empty"));
-        return;
-    }
+        if (m_TaskQueueSet.empty()) {
+            ImGui::SetCursorPosX((ImGui::GetWindowSize().x - ImGui::CalcTextSize(lang.getTextCStr("Empty")).x) * 0.5f);
+            ImGui::SetCursorPosY((ImGui::GetWindowSize().y - ImGui::CalcTextSize(lang.getTextCStr("Empty")).y) * 0.5f);
+            ImGui::Text(lang.getTextCStr("Empty"));
+            return;
+        }
 
-    for (auto &item : m_InQueueMap | std::views::values) {
-        drawTaskItem(item);
+        for (auto &item : m_TaskQueueSet) {
+            drawTaskItem(item);
+        }
     }
-
-    for (auto &sid : removed) {
-        m_InQueueMap.erase(sid);
+    
+    {
+        std::unique_lock _g(m_Mutex);
+        for (auto &sid : removed) {
+            m_TaskQueueSet.erase(findTaskBySid(sid));
+        }
+        removed.clear();
     }
-
-    /*
-    static auto example = DownloadTask{
-        osu::Beatmap{
-            .title = "Test title",
-            .artist = "Test artist",
-            .author = "Test mapper",
-            .bid = {123456, 789546},
-            .sid = 655352
-        },
-        4069000, 8192000
-    };
-    static auto example2 = DownloadTask{
-        osu::Beatmap{
-            .title = "Test title",
-            .artist = "Test artist",
-            .author = "Test mapper",
-            .bid = {123456, 789546},
-            .sid = 655351
-        },
-        0, 0
-    };
-
-    drawTaskItem(example);
-    drawTaskItem(example2);
-    */
 }
 
 FeatureInfo &DownloadQueue::getInfo() {
diff --git a/Downloader/src/features/DownloadQueue.h b/Downloader/src/features/DownloadQueue.h
index 6fb2268..3a645fb 100644
--- a/Downloader/src/features/DownloadQueue.h
+++ b/Downloader/src/features/DownloadQueue.h
@@ -1,6 +1,6 @@
 #pragma once
+#include <set>
 #include <shared_mutex>
-#include <unordered_map>
 
 #include "osu/Beatmap.h"
 #include "Feature.h"
@@ -11,6 +11,7 @@ struct DownloadTask {
     double dlSize{};
     double totalSize{};
     bool started = false;
+    uint64_t insertTime = UINT64_MAX;
 
     [[nodiscard]] double getProgress() const {
         return totalSize == 0 ? 0 : dlSize / totalSize;
@@ -19,12 +20,20 @@ struct DownloadTask {
     [[nodiscard]] bool prepared() const {
         return dlSize != 0 && totalSize != 0;
     }
+
+    bool operator==(const int sid) const {
+        return bm.sid == sid;
+    }
+
+    bool operator<(const DownloadTask &dl) const {
+        return insertTime < dl.insertTime;
+    }
 };
 
 class DownloadQueue : public Feature {
     DownloadQueue();
 
-    std::unordered_map<int, DownloadTask> m_InQueueMap;
+    std::set<DownloadTask> m_TaskQueueSet;
 
     inline static std::shared_mutex m_Mutex{};
 
@@ -33,19 +42,25 @@ class DownloadQueue : public Feature {
     void cancel(int sid) const;
 
 public:
+    using TaskIter = std::set<DownloadTask>::iterator;
+    using TaskIterConst = std::set<DownloadTask>::const_iterator;
+
     static DownloadQueue &GetInstance() {
         static DownloadQueue instance;
         return instance;
     }
 
     bool hasDownloadMapSet(const int id) const {
-        std::shared_lock _g(m_Mutex);
-        return m_InQueueMap.contains(id);
+        return std::ranges::any_of(m_TaskQueueSet.begin(), m_TaskQueueSet.end(),
+                                   [id](const DownloadTask &task) { return task.bm.sid == id; });
     }
 
     bool hasDownloadMap(const osu::Beatmap &bm) const {
-        std::shared_lock _g(m_Mutex);
-        return m_InQueueMap.contains(bm.sid);
+        return hasDownloadMapSet(bm.sid);
+    }
+
+    TaskIter findTaskBySid(const int id) const {
+        return std::ranges::find_if(m_TaskQueueSet, [id](const DownloadTask &task) { return task.bm.sid == id; });
     }
 
     bool addTask(const osu::Beatmap &bm);
diff --git a/Downloader/src/features/Downloader.cpp b/Downloader/src/features/Downloader.cpp
index 2ca2c47..40ce50f 100644
--- a/Downloader/src/features/Downloader.cpp
+++ b/Downloader/src/features/Downloader.cpp
@@ -5,8 +5,6 @@
 #include <shellapi.h>
 
 #include "DownloadQueue.h"
-#include "HandleLinkHook.h"
-#include "api/Bancho.h"
 #include "api/Sayobot.h"
 #include "config/I18nManager.h"
 #include "misc/Color.h"
diff --git a/Downloader/src/misc/VersionManager.cpp b/Downloader/src/misc/VersionManager.cpp
index 2445fa8..fd014a2 100644
--- a/Downloader/src/misc/VersionManager.cpp
+++ b/Downloader/src/misc/VersionManager.cpp
@@ -5,6 +5,11 @@
 #include "utils/gui_utils.h"
 
 void misc::VersionManager::CheckUpdate(const bool force) {
+#ifdef SKIP_VERSION_CHECK
+    LOGI("Skipped version check!");
+    GuiHelper::ShowInfoToast("Skipped version check!");
+#endif
+    
     static bool checked = false;
     static bool inCheck = false;
 
diff --git a/Downloader/src/misc/VersionManager.h b/Downloader/src/misc/VersionManager.h
index 09a0b58..9e856ef 100644
--- a/Downloader/src/misc/VersionManager.h
+++ b/Downloader/src/misc/VersionManager.h
@@ -1,5 +1,9 @@
 #pragma once
 
+#ifdef _DEBUG
+#define SKIP_VERSION_CHECK
+#endif
+
 #include <string>
 
 // dlver.h will auto generated by `update_version.py` before build
@@ -22,6 +26,9 @@ class VersionManager {
     static std::string_view GetCurrentVersionName() { return DOWNLOADER_VERSION_STR; }
 
     static bool IsLatest() {
+#ifdef SKIP_VERSION_CHECK
+        return true;
+#endif
         return GetCurrentVersionCode() >= s_LatestVersionCode;
     }
 };