diff --git a/src/citra_qt/bootmanager.cpp b/src/citra_qt/bootmanager.cpp
index e055332fe..c1c4ac753 100644
--- a/src/citra_qt/bootmanager.cpp
+++ b/src/citra_qt/bootmanager.cpp
@@ -292,7 +292,11 @@ public:
         if (GetWindowSystemType() == Frontend::WindowSystemType::Wayland) {
             setAttribute(Qt::WA_DontCreateNativeAncestors);
         }
+#ifdef __APPLE__
+        windowHandle()->setSurfaceType(QWindow::MetalSurface);
+#else
         windowHandle()->setSurfaceType(QWindow::VulkanSurface);
+#endif
     }
 
     QPaintEngine* paintEngine() const override {
diff --git a/src/citra_qt/configuration/configure_general.cpp b/src/citra_qt/configuration/configure_general.cpp
index 3a223398f..781e1a284 100644
--- a/src/citra_qt/configuration/configure_general.cpp
+++ b/src/citra_qt/configuration/configure_general.cpp
@@ -31,7 +31,8 @@ ConfigureGeneral::ConfigureGeneral(QWidget* parent)
 
     // Set a minimum width for the label to prevent the slider from changing size.
     // This scales across DPIs, and is acceptable for uncapitalized strings.
-    ui->emulation_speed_display_label->setMinimumWidth(tr("unthrottled").size() * 6);
+    const auto width = static_cast<int>(tr("unthrottled").size() * 6);
+    ui->emulation_speed_display_label->setMinimumWidth(width);
     ui->emulation_speed_combo->setVisible(!Settings::IsConfiguringGlobal());
     ui->screenshot_combo->setVisible(!Settings::IsConfiguringGlobal());
     ui->updateBox->setVisible(UISettings::values.updater_found);
diff --git a/src/citra_qt/configuration/configure_system.cpp b/src/citra_qt/configuration/configure_system.cpp
index e63f5399e..f0ae442d6 100644
--- a/src/citra_qt/configuration/configure_system.cpp
+++ b/src/citra_qt/configuration/configure_system.cpp
@@ -285,12 +285,12 @@ void ConfigureSystem::SetConfiguration() {
     date_time.setSecsSinceEpoch(Settings::values.init_time.GetValue());
     ui->edit_init_time->setDateTime(date_time);
 
-    long long init_time_offset = Settings::values.init_time_offset.GetValue();
-    long long days_offset = init_time_offset / 86400;
+    s64 init_time_offset = Settings::values.init_time_offset.GetValue();
+    int days_offset = static_cast<int>(init_time_offset / 86400);
     ui->edit_init_time_offset_days->setValue(days_offset);
 
-    unsigned long long time_offset = std::abs(init_time_offset) - std::abs(days_offset * 86400);
-    QTime time = QTime::fromMSecsSinceStartOfDay(time_offset * 1000);
+    u64 time_offset = std::abs(init_time_offset) - std::abs(days_offset * 86400);
+    QTime time = QTime::fromMSecsSinceStartOfDay(static_cast<int>(time_offset * 1000));
     ui->edit_init_time_offset_time->setTime(time);
 
     if (!enabled) {
diff --git a/src/citra_qt/loading_screen.cpp b/src/citra_qt/loading_screen.cpp
index 0efb6f71a..e4d61652b 100644
--- a/src/citra_qt/loading_screen.cpp
+++ b/src/citra_qt/loading_screen.cpp
@@ -180,9 +180,10 @@ void LoadingScreen::OnLoadProgress(VideoCore::LoadCallbackStage stage, std::size
         }
         const auto eta_mseconds = std::chrono::duration_cast<std::chrono::milliseconds>(
             rolling_average * (total - value));
+        const auto limited_mseconds = std::max<long>(eta_mseconds.count(), 1000);
         estimate = tr("Estimated Time %1")
                        .arg(QTime(0, 0, 0, 0)
-                                .addMSecs(std::max<long>(eta_mseconds.count(), 1000))
+                                .addMSecs(static_cast<int>(limited_mseconds))
                                 .toString(QStringLiteral("mm:ss")));
     }
 
diff --git a/src/citra_qt/movie/movie_play_dialog.cpp b/src/citra_qt/movie/movie_play_dialog.cpp
index dfdc799f1..6df973af5 100644
--- a/src/citra_qt/movie/movie_play_dialog.cpp
+++ b/src/citra_qt/movie/movie_play_dialog.cpp
@@ -125,8 +125,8 @@ void MoviePlayDialog::UpdateUIDisplay() {
         } else {
             const u64 msecs = Service::HID::Module::pad_update_ticks * metadata.input_count * 1000 /
                               BASE_CLOCK_RATE_ARM11;
-            ui->lengthLineEdit->setText(
-                QTime::fromMSecsSinceStartOfDay(msecs).toString(QStringLiteral("hh:mm:ss.zzz")));
+            ui->lengthLineEdit->setText(QTime::fromMSecsSinceStartOfDay(static_cast<int>(msecs))
+                                            .toString(QStringLiteral("hh:mm:ss.zzz")));
         }
     }
 }
diff --git a/src/citra_qt/multiplayer/lobby.cpp b/src/citra_qt/multiplayer/lobby.cpp
index 862ed19a5..7cd2ae7e1 100644
--- a/src/citra_qt/multiplayer/lobby.cpp
+++ b/src/citra_qt/multiplayer/lobby.cpp
@@ -284,7 +284,7 @@ bool LobbyFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex& s
     // filter by empty rooms
     if (filter_empty) {
         QModelIndex member_list = sourceModel()->index(sourceRow, Column::MEMBER, sourceParent);
-        const int player_count =
+        const qsizetype player_count =
             sourceModel()->data(member_list, LobbyItemMemberList::MemberListRole).toList().size();
         if (player_count == 0) {
             return false;
@@ -294,7 +294,7 @@ bool LobbyFilterProxyModel::filterAcceptsRow(int sourceRow, const QModelIndex& s
     // filter by filled rooms
     if (filter_full) {
         QModelIndex member_list = sourceModel()->index(sourceRow, Column::MEMBER, sourceParent);
-        const int player_count =
+        const qsizetype player_count =
             sourceModel()->data(member_list, LobbyItemMemberList::MemberListRole).toList().size();
         const int max_players =
             sourceModel()->data(member_list, LobbyItemMemberList::MaxPlayerRole).toInt();
diff --git a/src/citra_qt/multiplayer/lobby_p.h b/src/citra_qt/multiplayer/lobby_p.h
index 749ca627f..16db78eae 100644
--- a/src/citra_qt/multiplayer/lobby_p.h
+++ b/src/citra_qt/multiplayer/lobby_p.h
@@ -198,8 +198,8 @@ public:
 
     bool operator<(const QStandardItem& other) const override {
         // sort by rooms that have the most players
-        int left_members = data(MemberListRole).toList().size();
-        int right_members = other.data(MemberListRole).toList().size();
+        qsizetype left_members = data(MemberListRole).toList().size();
+        qsizetype right_members = other.data(MemberListRole).toList().size();
         return left_members < right_members;
     }
 };
diff --git a/src/citra_qt/util/spinbox.cpp b/src/citra_qt/util/spinbox.cpp
index 18af19695..722af05e3 100644
--- a/src/citra_qt/util/spinbox.cpp
+++ b/src/citra_qt/util/spinbox.cpp
@@ -194,7 +194,7 @@ QString CSpinBox::TextFromValue() {
 }
 
 qint64 CSpinBox::ValueFromText() {
-    unsigned strpos = prefix.length();
+    qsizetype strpos = prefix.length();
 
     QString num_string = text().mid(strpos, text().length() - strpos - suffix.length());
     return num_string.toLongLong(nullptr, base);
@@ -216,7 +216,7 @@ QValidator::State CSpinBox::validate(QString& input, int& pos) const {
     if (!prefix.isEmpty() && input.left(prefix.length()) != prefix)
         return QValidator::Invalid;
 
-    int strpos = prefix.length();
+    qsizetype strpos = prefix.length();
 
     // Empty "numbers" allowed as intermediate values
     if (strpos >= input.length() - HasSign() - suffix.length())
@@ -245,7 +245,7 @@ QValidator::State CSpinBox::validate(QString& input, int& pos) const {
 
     // Match string
     QRegularExpression num_regexp(QRegularExpression::anchoredPattern(regexp));
-    int num_pos = strpos;
+    qsizetype num_pos = strpos;
     QString sub_input = input.mid(strpos, input.length() - strpos - suffix.length());
 
     auto match = num_regexp.match(sub_input);
diff --git a/src/core/cheats/gateway_cheat.cpp b/src/core/cheats/gateway_cheat.cpp
index b44d60477..c7782127d 100644
--- a/src/core/cheats/gateway_cheat.cpp
+++ b/src/core/cheats/gateway_cheat.cpp
@@ -197,9 +197,9 @@ GatewayCheat::CheatLine::CheatLine(const std::string& line) {
         if (type_temp == "D" || type_temp == "d")
             sub_type_temp = line.substr(1, 1);
         type = static_cast<CheatType>(std::stoi(type_temp + sub_type_temp, 0, 16));
-        first = std::stoul(line.substr(0, 8), 0, 16);
+        first = static_cast<u32>(std::stoul(line.substr(0, 8), 0, 16));
         address = first & 0x0FFFFFFF;
-        value = std::stoul(line.substr(9, 8), 0, 16);
+        value = static_cast<u32>(std::stoul(line.substr(9, 8), 0, 16));
         cheat_line = line;
     } catch (const std::logic_error&) {
         type = CheatType::Null;
diff --git a/src/core/dumping/ffmpeg_backend.cpp b/src/core/dumping/ffmpeg_backend.cpp
index 3a87fca06..46e2453a9 100644
--- a/src/core/dumping/ffmpeg_backend.cpp
+++ b/src/core/dumping/ffmpeg_backend.cpp
@@ -513,7 +513,7 @@ bool FFmpegAudioStream::Init(FFmpegMuxer& muxer) {
     }
 
     if (codec_context->frame_size) {
-        frame_size = static_cast<u64>(codec_context->frame_size);
+        frame_size = codec_context->frame_size;
     } else { // variable frame size support
         frame_size = std::tuple_size<AudioCore::StereoFrame16>::value;
     }
diff --git a/src/core/file_sys/plugin_3gx.cpp b/src/core/file_sys/plugin_3gx.cpp
index f8a01be9b..839bd8f80 100644
--- a/src/core/file_sys/plugin_3gx.cpp
+++ b/src/core/file_sys/plugin_3gx.cpp
@@ -184,7 +184,7 @@ Loader::ResultStatus FileSys::Plugin3GXLoader::Map(
     const u32 block_size = mem_region_sizes[header.infos.flags.memory_region_size.Value()];
     const u32 exe_size = (sizeof(PluginHeader) + text_section.size() + rodata_section.size() +
                           data_section.size() + header.executable.bss_size + 0x1000) &
-                         ~0xFFF;
+                         ~0xFFFu;
 
     // Allocate the framebuffer block so that is in the highest FCRAM position possible
     auto offset_fb =
diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index e0257f0a6..b1d958f8e 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -509,7 +509,8 @@ void SendReply(const char* reply) {
     u8* ptr = command_buffer;
     u32 left = command_length + 4;
     while (left > 0) {
-        int sent_size = send(gdbserver_socket, reinterpret_cast<char*>(ptr), left, 0);
+        s32 sent_size =
+            static_cast<s32>(send(gdbserver_socket, reinterpret_cast<char*>(ptr), left, 0));
         if (sent_size < 0) {
             LOG_ERROR(Debug_GDBStub, "gdb: send failed");
             return Shutdown();
diff --git a/src/core/hle/service/am/am.cpp b/src/core/hle/service/am/am.cpp
index 8a7939ea1..ee5d0c88e 100644
--- a/src/core/hle/service/am/am.cpp
+++ b/src/core/hle/service/am/am.cpp
@@ -589,7 +589,7 @@ std::string GetTitleMetadataPath(Service::FS::MediaType media_type, u64 tid, boo
         Common::SplitPath(entry.virtualName, nullptr, &filename_filename, &filename_extension);
 
         if (filename_extension == ".tmd") {
-            const u32 id = std::stoul(filename_filename, nullptr, 16);
+            const u32 id = static_cast<u32>(std::stoul(filename_filename, nullptr, 16));
             base_id = std::min(base_id, id);
             update_id = std::max(update_id, id);
         }
diff --git a/src/core/hle/service/soc/soc_u.cpp b/src/core/hle/service/soc/soc_u.cpp
index f07dffafb..031320eb2 100644
--- a/src/core/hle/service/soc/soc_u.cpp
+++ b/src/core/hle/service/soc/soc_u.cpp
@@ -982,11 +982,13 @@ void SOC_U::SendToOther(Kernel::HLERequestContext& ctx) {
         CTRSockAddr ctr_dest_addr;
         std::memcpy(&ctr_dest_addr, dest_addr_buffer.data(), sizeof(ctr_dest_addr));
         sockaddr dest_addr = CTRSockAddr::ToPlatform(ctr_dest_addr);
-        ret = ::sendto(fd_info->second.socket_fd, reinterpret_cast<const char*>(input_buff.data()),
-                       len, flags, &dest_addr, sizeof(dest_addr));
+        ret = static_cast<s32>(::sendto(fd_info->second.socket_fd,
+                                        reinterpret_cast<const char*>(input_buff.data()), len,
+                                        flags, &dest_addr, sizeof(dest_addr)));
     } else {
-        ret = ::sendto(fd_info->second.socket_fd, reinterpret_cast<const char*>(input_buff.data()),
-                       len, flags, nullptr, 0);
+        ret = static_cast<s32>(::sendto(fd_info->second.socket_fd,
+                                        reinterpret_cast<const char*>(input_buff.data()), len,
+                                        flags, nullptr, 0));
     }
 
     const auto send_error = (ret == SOCKET_ERROR_VALUE) ? GET_ERRNO : 0;
@@ -1040,11 +1042,13 @@ void SOC_U::SendTo(Kernel::HLERequestContext& ctx) {
         CTRSockAddr ctr_dest_addr;
         std::memcpy(&ctr_dest_addr, dest_addr_buff.data(), sizeof(ctr_dest_addr));
         sockaddr dest_addr = CTRSockAddr::ToPlatform(ctr_dest_addr);
-        ret = ::sendto(fd_info->second.socket_fd, reinterpret_cast<const char*>(input_buff.data()),
-                       len, flags, &dest_addr, sizeof(dest_addr));
+        ret = static_cast<s32>(::sendto(fd_info->second.socket_fd,
+                                        reinterpret_cast<const char*>(input_buff.data()), len,
+                                        flags, &dest_addr, sizeof(dest_addr)));
     } else {
-        ret = ::sendto(fd_info->second.socket_fd, reinterpret_cast<const char*>(input_buff.data()),
-                       len, flags, nullptr, 0);
+        ret = static_cast<s32>(::sendto(fd_info->second.socket_fd,
+                                        reinterpret_cast<const char*>(input_buff.data()), len,
+                                        flags, nullptr, 0));
     }
 
     auto send_error = (ret == SOCKET_ERROR_VALUE) ? GET_ERRNO : 0;
@@ -1103,15 +1107,17 @@ void SOC_U::RecvFromOther(Kernel::HLERequestContext& ctx) {
     }
 
     if (addr_len > 0) {
-        ret = ::recvfrom(fd_info->second.socket_fd, reinterpret_cast<char*>(output_buff.data()),
-                         len, flags, &src_addr, &src_addr_len);
+        ret = static_cast<s32>(::recvfrom(fd_info->second.socket_fd,
+                                          reinterpret_cast<char*>(output_buff.data()), len, flags,
+                                          &src_addr, &src_addr_len));
         if (ret >= 0 && src_addr_len > 0) {
             ctr_src_addr = CTRSockAddr::FromPlatform(src_addr);
             std::memcpy(addr_buff.data(), &ctr_src_addr, addr_len);
         }
     } else {
-        ret = ::recvfrom(fd_info->second.socket_fd, reinterpret_cast<char*>(output_buff.data()),
-                         len, flags, NULL, 0);
+        ret = static_cast<s32>(::recvfrom(fd_info->second.socket_fd,
+                                          reinterpret_cast<char*>(output_buff.data()), len, flags,
+                                          NULL, 0));
         addr_buff.resize(0);
     }
     int recv_error = (ret == SOCKET_ERROR_VALUE) ? GET_ERRNO : 0;
@@ -1178,15 +1184,17 @@ void SOC_U::RecvFrom(Kernel::HLERequestContext& ctx) {
     }
     if (addr_len > 0) {
         // Only get src adr if input adr available
-        ret = ::recvfrom(fd_info->second.socket_fd, reinterpret_cast<char*>(output_buff.data()),
-                         len, flags, &src_addr, &src_addr_len);
+        ret = static_cast<s32>(::recvfrom(fd_info->second.socket_fd,
+                                          reinterpret_cast<char*>(output_buff.data()), len, flags,
+                                          &src_addr, &src_addr_len));
         if (ret >= 0 && src_addr_len > 0) {
             ctr_src_addr = CTRSockAddr::FromPlatform(src_addr);
             std::memcpy(addr_buff.data(), &ctr_src_addr, addr_len);
         }
     } else {
-        ret = ::recvfrom(fd_info->second.socket_fd, reinterpret_cast<char*>(output_buff.data()),
-                         len, flags, NULL, 0);
+        ret = static_cast<s32>(::recvfrom(fd_info->second.socket_fd,
+                                          reinterpret_cast<char*>(output_buff.data()), len, flags,
+                                          NULL, 0));
         addr_buff.resize(0);
     }
     int recv_error = (ret == SOCKET_ERROR_VALUE) ? GET_ERRNO : 0;
@@ -1753,7 +1761,11 @@ std::optional<SOC_U::InterfaceInfo> SOC_U::GetDefaultInterfaceInfo() {
     }
 
     InterfaceInfo ret;
-    s64 sock_fd = -1;
+#ifdef _WIN32
+    SOCKET sock_fd = -1;
+#else
+    int sock_fd = -1;
+#endif
     bool interface_found = false;
     struct sockaddr_in s_in = {.sin_family = AF_INET, .sin_port = htons(53), .sin_addr = {}};
     s_in.sin_addr.s_addr = inet_addr("8.8.8.8");