diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp
index bd4b3d7c7..6f27f990b 100644
--- a/src/core/crypto/key_manager.cpp
+++ b/src/core/crypto/key_manager.cpp
@@ -237,7 +237,7 @@ void KeyManager::SetKey(S128KeyType id, Key128 key, u64 field1, u64 field2) {
         Key128 rights_id;
         std::memcpy(rights_id.data(), &field2, sizeof(u64));
         std::memcpy(rights_id.data() + sizeof(u64), &field1, sizeof(u64));
-        WriteKeyToFile(true, fmt::format("{}", Common::HexArrayToString(rights_id)), key);
+        WriteKeyToFile(true, Common::HexArrayToString(rights_id), key);
     }
     const auto iter2 = std::find_if(
         s128_file_id.begin(), s128_file_id.end(),
diff --git a/src/core/file_sys/card_image.cpp b/src/core/file_sys/card_image.cpp
index d0f1afac0..e07ac8503 100644
--- a/src/core/file_sys/card_image.cpp
+++ b/src/core/file_sys/card_image.cpp
@@ -12,6 +12,7 @@
 #include "core/file_sys/content_archive.h"
 #include "core/file_sys/nca_metadata.h"
 #include "core/file_sys/partition_filesystem.h"
+#include "core/file_sys/submission_package.h"
 #include "core/file_sys/vfs_offset.h"
 #include "core/loader/loader.h"
 
diff --git a/src/core/file_sys/card_image.h b/src/core/file_sys/card_image.h
index b73f1d900..4d07d3d05 100644
--- a/src/core/file_sys/card_image.h
+++ b/src/core/file_sys/card_image.h
@@ -11,7 +11,6 @@
 #include "common/swap.h"
 #include "core/file_sys/vfs.h"
 #include "core/loader/loader.h"
-#include "submission_package.h"
 
 namespace Loader {
 enum class ResultStatus : u16;
@@ -21,6 +20,7 @@ namespace FileSys {
 
 class NCA;
 enum class NCAContentType : u8;
+class NSP;
 
 enum class GamecardSize : u8 {
     S_1GB = 0xFA,
diff --git a/src/core/file_sys/submission_package.cpp b/src/core/file_sys/submission_package.cpp
index 660771cf8..ce05a5845 100644
--- a/src/core/file_sys/submission_package.cpp
+++ b/src/core/file_sys/submission_package.cpp
@@ -72,21 +72,21 @@ NSP::NSP(VirtualFile file_)
 
                 ncas_title[ContentRecordType::Meta] = nca;
                 for (const auto& rec : cnmt.GetContentRecords()) {
-                    const auto next_file = pfs->GetFile(
-                        fmt::format("{}.nca", Common::HexArrayToString(rec.nca_id, false)));
+                    const auto id_string = Common::HexArrayToString(rec.nca_id, false);
+                    const auto next_file = pfs->GetFile(fmt::format("{}.nca", id_string));
                     if (next_file == nullptr) {
                         LOG_WARNING(Service_FS,
                                     "NCA with ID {}.nca is listed in content metadata, but cannot "
                                     "be found in PFS. NSP appears to be corrupted.",
-                                    Common::HexArrayToString(rec.nca_id, false));
+                                    id_string);
                         continue;
                     }
 
-                    const auto next_nca = std::make_shared<NCA>(next_file);
+                    auto next_nca = std::make_shared<NCA>(next_file);
                     if (next_nca->GetType() == NCAContentType::Program)
                         program_status[cnmt.GetTitleID()] = next_nca->GetStatus();
                     if (next_nca->GetStatus() == Loader::ResultStatus::Success)
-                        ncas_title[rec.type] = next_nca;
+                        ncas_title[rec.type] = std::move(next_nca);
                 }
 
                 break;
@@ -95,14 +95,17 @@ NSP::NSP(VirtualFile file_)
     }
 }
 
+NSP::~NSP() = default;
+
 Loader::ResultStatus NSP::GetStatus() const {
     return status;
 }
 
 Loader::ResultStatus NSP::GetProgramStatus(u64 title_id) const {
-    if (program_status.find(title_id) != program_status.end())
-        return program_status.at(title_id);
-    return Loader::ResultStatus::ErrorNSPMissingProgramNCA;
+    const auto iter = program_status.find(title_id);
+    if (iter == program_status.end())
+        return Loader::ResultStatus::ErrorNSPMissingProgramNCA;
+    return iter->second;
 }
 
 u64 NSP::GetFirstTitleID() const {
@@ -112,16 +115,19 @@ u64 NSP::GetFirstTitleID() const {
 }
 
 u64 NSP::GetProgramTitleID() const {
-    auto out = GetFirstTitleID();
-    for (const auto other_tid : GetTitleIDs()) {
-        if ((out & 0x800) != 0)
-            out = other_tid;
-    }
-    return out;
+    const auto out = GetFirstTitleID();
+    if ((out & 0x800) == 0)
+        return out;
+
+    const auto ids = GetTitleIDs();
+    const auto iter =
+        std::find_if(ids.begin(), ids.end(), [](u64 tid) { return (tid & 0x800) == 0; });
+    return iter == ids.end() ? out : *iter;
 }
 
 std::vector<u64> NSP::GetTitleIDs() const {
     std::vector<u64> out;
+    out.reserve(ncas.size());
     for (const auto& kv : ncas)
         out.push_back(kv.first);
     return out;
@@ -156,7 +162,7 @@ std::multimap<u64, std::shared_ptr<NCA>> NSP::GetNCAsByTitleID() const {
     std::multimap<u64, std::shared_ptr<NCA>> out;
     for (const auto& map : ncas) {
         for (const auto& inner_map : map.second)
-            out.insert({map.first, inner_map.second});
+            out.emplace(map.first, inner_map.second);
     }
     return out;
 }
@@ -168,13 +174,16 @@ std::map<u64, std::map<ContentRecordType, std::shared_ptr<NCA>>> NSP::GetNCAs()
 std::shared_ptr<NCA> NSP::GetNCA(u64 title_id, ContentRecordType type) const {
     if (extracted)
         LOG_WARNING(Service_FS, "called on an NSP that is of type extracted.");
-    if (ncas.find(title_id) != ncas.end()) {
-        const auto& inner_map = ncas.at(title_id);
-        if (inner_map.find(type) != inner_map.end())
-            return inner_map.at(type);
-    }
 
-    return nullptr;
+    const auto title_id_iter = ncas.find(title_id);
+    if (title_id_iter == ncas.end())
+        return nullptr;
+
+    const auto type_iter = title_id_iter->second.find(type);
+    if (type_iter == title_id_iter->second.end())
+        return nullptr;
+
+    return type_iter->second;
 }
 
 VirtualFile NSP::GetNCAFile(u64 title_id, ContentRecordType type) const {
@@ -197,9 +206,9 @@ std::vector<Core::Crypto::Key128> NSP::GetTitlekey() const {
             continue;
         }
 
-        Core::Crypto::Key128 key{};
-        ticket_file->Read(key.data(), key.size(), Core::Crypto::TICKET_FILE_TITLEKEY_OFFSET);
-        out.push_back(key);
+        out.emplace_back();
+        ticket_file->Read(out.back().data(), out.back().size(),
+                          Core::Crypto::TICKET_FILE_TITLEKEY_OFFSET);
     }
     return out;
 }
diff --git a/src/core/file_sys/submission_package.h b/src/core/file_sys/submission_package.h
index 7b520df57..482a8b71f 100644
--- a/src/core/file_sys/submission_package.h
+++ b/src/core/file_sys/submission_package.h
@@ -10,6 +10,7 @@
 #include "common/common_types.h"
 #include "common/swap.h"
 #include "core/file_sys/content_archive.h"
+#include "core/file_sys/romfs_factory.h"
 #include "core/file_sys/vfs.h"
 #include "core/loader/loader.h"
 #include "romfs_factory.h"
@@ -19,6 +20,7 @@ namespace FileSys {
 class NSP : public ReadOnlyVfsDirectory {
 public:
     explicit NSP(VirtualFile file);
+    ~NSP();
 
     Loader::ResultStatus GetStatus() const;
     Loader::ResultStatus GetProgramStatus(u64 title_id) const;
diff --git a/src/core/loader/nsp.cpp b/src/core/loader/nsp.cpp
index 75d9fc1bc..b59d40052 100644
--- a/src/core/loader/nsp.cpp
+++ b/src/core/loader/nsp.cpp
@@ -21,22 +21,27 @@ namespace Loader {
 AppLoader_NSP::AppLoader_NSP(FileSys::VirtualFile file)
     : AppLoader(file), nsp(std::make_unique<FileSys::NSP>(file)),
       title_id(nsp->GetProgramTitleID()) {
+
     if (nsp->GetStatus() != ResultStatus::Success)
         return;
     if (nsp->IsExtractedType())
         return;
+
     const auto control_nca =
         nsp->GetNCA(nsp->GetFirstTitleID(), FileSys::ContentRecordType::Control);
     if (control_nca == nullptr || control_nca->GetStatus() != ResultStatus::Success)
         return;
+
     const auto romfs = FileSys::ExtractRomFS(control_nca->GetRomFS());
     if (romfs == nullptr)
         return;
+
     for (const auto& language : FileSys::LANGUAGE_NAMES) {
         icon_file = romfs->GetFile("icon_" + std::string(language) + ".dat");
         if (icon_file != nullptr)
             break;
     }
+
     const auto nacp_raw = romfs->GetFile("control.nacp");
     if (nacp_raw == nullptr)
         return;
@@ -51,15 +56,17 @@ FileType AppLoader_NSP::IdentifyType(const FileSys::VirtualFile& file) {
     if (nsp.GetStatus() == ResultStatus::Success) {
         // Extracted Type case
         if (nsp.IsExtractedType() && nsp.GetExeFS() != nullptr &&
-            FileSys::IsDirectoryExeFS(nsp.GetExeFS()) && nsp.GetRomFS() != nullptr)
+            FileSys::IsDirectoryExeFS(nsp.GetExeFS()) && nsp.GetRomFS() != nullptr) {
             return FileType::NSP;
+        }
 
         // Non-Ectracted Type case
         if (!nsp.IsExtractedType() &&
             nsp.GetNCA(nsp.GetFirstTitleID(), FileSys::ContentRecordType::Program) != nullptr &&
             AppLoader_NCA::IdentifyType(nsp.GetNCAFile(
-                nsp.GetFirstTitleID(), FileSys::ContentRecordType::Program)) == FileType::NCA)
+                nsp.GetFirstTitleID(), FileSys::ContentRecordType::Program)) == FileType::NCA) {
             return FileType::NSP;
+        }
     }
 
     return FileType::Error;
diff --git a/src/core/loader/nsp.h b/src/core/loader/nsp.h
index 785feaf37..7ef810499 100644
--- a/src/core/loader/nsp.h
+++ b/src/core/loader/nsp.h
@@ -22,7 +22,7 @@ class AppLoader_NCA;
 class AppLoader_NSP final : public AppLoader {
 public:
     explicit AppLoader_NSP(FileSys::VirtualFile file);
-    ~AppLoader_NSP();
+    ~AppLoader_NSP() override;
 
     /**
      * Returns the type of the file