diff --git a/.gitignore b/.gitignore
index 48a84ca3..56e2663b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -23,3 +23,4 @@ disasm.txt
 CMakeSettings.json
 compile_commands.json
 *.diagsession
+tests/
\ No newline at end of file
diff --git a/external/parallel-rdp/ParallelRDPWrapper.cpp b/external/parallel-rdp/ParallelRDPWrapper.cpp
index d701efaa..20c78c0b 100644
--- a/external/parallel-rdp/ParallelRDPWrapper.cpp
+++ b/external/parallel-rdp/ParallelRDPWrapper.cpp
@@ -1,8 +1,7 @@
 #include <File.hpp>
-#include <ParallelRDPWrapper.hpp>
+#include <backend/Core.hpp>
 #include <memory>
 #include <rdp_device.hpp>
-#include <core/mmio/VI.hpp>
 #include <resources/vert.spv.h>
 #include <resources/frag.spv.h>
 #include <KaizenGui.hpp>
@@ -159,10 +158,7 @@ void ParallelRDP::DrawFullscreenTexturedQuad(Util::IntrusivePtr<Image> image,
   cmd->draw(3, 1);
 }
 
-std::mutex coreM;
-
 void ParallelRDP::UpdateScreen(Util::IntrusivePtr<Image> image) const {
-  std::lock_guard<std::mutex> coreLock(coreM);
   wsi->begin_frame();
 
   if (!image) {
@@ -188,16 +184,15 @@ void ParallelRDP::UpdateScreen(Util::IntrusivePtr<Image> image) const {
 
   cmd->begin_render_pass(wsi->get_device().get_swapchain_render_pass(SwapchainRenderPass::ColorOnly));
   DrawFullscreenTexturedQuad(image, cmd);
-  auto drawData = ImGui::GetDrawData();
-  if(drawData)
-    ImGui_ImplVulkan_RenderDrawData(drawData, cmd->get_command_buffer());
+  ImGui_ImplVulkan_RenderDrawData(ImGui::GetDrawData(), cmd->get_command_buffer());
   cmd->end_render_pass();
   wsi->get_device().submit(cmd);
   wsi->end_frame();
 }
 
-void ParallelRDP::UpdateScreen(const n64::VI &vi, bool playing) const {
+void ParallelRDP::UpdateScreen(n64::Core &core, bool playing) const {  
   if(playing) {
+    n64::VI& vi = core.GetVI();
     command_processor->set_vi_register(VIRegister::Control, vi.status.raw);
     command_processor->set_vi_register(VIRegister::Origin, vi.origin);
     command_processor->set_vi_register(VIRegister::Width, vi.width);
diff --git a/external/parallel-rdp/ParallelRDPWrapper.hpp b/external/parallel-rdp/ParallelRDPWrapper.hpp
index 9ea8f064..f0fd5bc0 100644
--- a/external/parallel-rdp/ParallelRDPWrapper.hpp
+++ b/external/parallel-rdp/ParallelRDPWrapper.hpp
@@ -4,7 +4,7 @@
 #include <common.hpp>
 
 namespace n64 {
-struct VI;
+struct Core;
 }
 
 class ParallelRDP {
@@ -23,7 +23,7 @@ public:
             const std::shared_ptr<WindowInfo> &, const u8 *);
   ParallelRDP() = default;
 
-  void UpdateScreen(const n64::VI &, bool = true) const;
+  void UpdateScreen(n64::Core &, bool = true) const;
   void EnqueueCommand(int, const u32 *) const;
   void OnFullSync() const;
   bool IsFramerateUnlocked() const;
diff --git a/src/backend/Core.cpp b/src/backend/Core.cpp
index 6151fd44..2ba8455a 100644
--- a/src/backend/Core.cpp
+++ b/src/backend/Core.cpp
@@ -6,7 +6,6 @@ namespace n64 {
 Core::Core() : cpu(std::make_unique<Interpreter>(parallel)) {}
 
 void Core::Stop() {
-  render = false;
   pause = true;
   romLoaded = false;
   cpu->Reset();
@@ -38,7 +37,6 @@ void Core::LoadROM(const std::string &rom_) {
   cpu->GetMem().LoadSRAM(cpu->GetMem().saveType, rom);
   cpu->GetMem().mmio.si.pif.Execute();
   pause = false;
-  render = true;
 }
 
 void Core::Run(float volumeL, float volumeR) {
diff --git a/src/backend/Core.hpp b/src/backend/Core.hpp
index 545707a1..7c50c1c7 100644
--- a/src/backend/Core.hpp
+++ b/src/backend/Core.hpp
@@ -19,7 +19,6 @@ struct Core {
   u32 breakpoint = 0;
 
   bool pause = true;
-  bool render = false;
   u32 cycles = 0;
   bool romLoaded = false;
   std::string rom;
diff --git a/src/frontend/EmuThread.cpp b/src/frontend/EmuThread.cpp
index 1175a4c3..bdff2139 100644
--- a/src/frontend/EmuThread.cpp
+++ b/src/frontend/EmuThread.cpp
@@ -6,46 +6,39 @@ EmuThread::EmuThread(const std::shared_ptr<n64::Core> &core, double &fps, Render
                      SettingsWindow &settings) noexcept :
     renderWidget(renderWidget), core(core), settings(settings), fps(fps) {}
 
-void EmuThread::start() noexcept {
-  thread = std::thread([&]() {
-    isRunning = true;
+void EmuThread::run() noexcept {
+  isRunning = true;
 
-    auto lastSample = std::chrono::high_resolution_clock::now();
-    auto avgFps = 16.667;
-    auto sampledFps = 0;
-    static bool oneSecondPassed = false;
-  
-    fps = 1000.0 / avgFps;
-  
-    while (!interruptionRequested) {
-      const auto startFrameTime = std::chrono::high_resolution_clock::now();
-      if (!core->pause) {
-        core->Run(settings.getVolumeL(), settings.getVolumeR());
-      }
-  
-      const auto endFrameTime = std::chrono::high_resolution_clock::now();
-      using namespace std::chrono_literals;
-      const auto frameTimeMs = std::chrono::duration<double>(endFrameTime - startFrameTime) / 1ms;
-      avgFps += frameTimeMs;
-  
-      sampledFps++;
-  
-      if (const auto elapsedSinceLastSample = std::chrono::duration<double>(endFrameTime - lastSample) / 1s; 
-          elapsedSinceLastSample >= 1.0) {
-        if (!oneSecondPassed) {
-          oneSecondPassed = true;
-          continue;
-        }
-        lastSample = endFrameTime;
-        avgFps /= sampledFps;
-        sampledFps = 0;
-        fps = 1000.0 / avgFps;
-      }
+  auto lastSample = std::chrono::high_resolution_clock::now();
+  auto avgFps = 16.667;
+  auto sampledFps = 0;
+  static bool oneSecondPassed = false;
+
+  fps = 1000.0 / avgFps;
+
+  const auto startFrameTime = std::chrono::high_resolution_clock::now();
+  if (!core->pause) {
+    core->Run(settings.getVolumeL(), settings.getVolumeR());
+  }
+
+  const auto endFrameTime = std::chrono::high_resolution_clock::now();
+  using namespace std::chrono_literals;
+  const auto frameTimeMs = std::chrono::duration<double>(endFrameTime - startFrameTime) / 1ms;
+  avgFps += frameTimeMs;
+
+  sampledFps++;
+
+  if (const auto elapsedSinceLastSample = std::chrono::duration<double>(endFrameTime - lastSample) / 1s; 
+      elapsedSinceLastSample >= 1.0) {
+    if (!oneSecondPassed) {
+      oneSecondPassed = true;
+      return;
     }
-    SetRender(false);
-    Stop();
-    isRunning = false;
-  });
+    lastSample = endFrameTime;
+    avgFps /= sampledFps;
+    sampledFps = 0;
+    fps = 1000.0 / avgFps;
+  }
 }
 
 void EmuThread::TogglePause() const noexcept {
@@ -55,8 +48,6 @@ void EmuThread::TogglePause() const noexcept {
                                   core->cpu->GetMem().mmio.si.pif.movie.GetFilename());
 }
 
-void EmuThread::SetRender(const bool v) const noexcept { core->render = v; }
-
 void EmuThread::Reset() const noexcept {
   core->pause = true;
   core->Stop();
diff --git a/src/frontend/EmuThread.hpp b/src/frontend/EmuThread.hpp
index 84bdcd9c..8b0eebfe 100644
--- a/src/frontend/EmuThread.hpp
+++ b/src/frontend/EmuThread.hpp
@@ -14,9 +14,8 @@ class EmuThread final {
 public:
   explicit EmuThread(const std::shared_ptr<n64::Core> &, double &, RenderWidget &, SettingsWindow &) noexcept;
 
-  void start() noexcept;
+  void run() noexcept;
   void TogglePause() const noexcept;
-  void SetRender(bool v) const noexcept;
   void Reset() const noexcept;
   void Stop() const noexcept;
   void requestInterruption() { interruptionRequested = true; }
@@ -25,5 +24,4 @@ public:
   std::shared_ptr<n64::Core> core;
   SettingsWindow &settings;
   double& fps;
-  std::thread thread; 
 };
diff --git a/src/frontend/ImGuiImpl/GUI.hpp b/src/frontend/ImGuiImpl/GUI.hpp
index a72d944b..96571f17 100644
--- a/src/frontend/ImGuiImpl/GUI.hpp
+++ b/src/frontend/ImGuiImpl/GUI.hpp
@@ -150,6 +150,5 @@ namespace gui {
     }
 
     inline void EndFrame() {
-        ImGui::Render();
     }
 }
\ No newline at end of file
diff --git a/src/frontend/KaizenGui.cpp b/src/frontend/KaizenGui.cpp
index feafbfad..244bdbee 100644
--- a/src/frontend/KaizenGui.cpp
+++ b/src/frontend/KaizenGui.cpp
@@ -52,9 +52,12 @@ KaizenGui::KaizenGui() noexcept : window("Kaizen", 800, 600), core(std::make_sha
       {"Open", [&]() {
         NFD::Guard guard;
         NFD::UniquePath path;
-        nfdfilteritem_t filterItem = {"Nintendo 64 roms", "n64,z64,v64,N64,Z64,V64"};
+        static const std::vector<nfdfilteritem_t> filterItems = {
+          {"Nintendo 64 rom archive", "rar,RAR,tar,TAR,zip,ZIP,7z,7Z"},
+          {"Nintendo 64 rom", "n64,z64,v64,N64,Z64,V64"}
+        };
 
-        auto result = NFD::OpenDialog(path, &filterItem, 1);
+        auto result = NFD::OpenDialog(path, filterItems.data(), filterItems.size());
         if(result == NFD_CANCEL) return;
         if(result == NFD_ERROR)
           Util::panic("Error: {}", NFD::GetError());
@@ -88,20 +91,24 @@ void KaizenGui::RenderUI() {
   menuBar.render();
   settingsWindow.render();
   about.render();
-  gui::EndFrame();
-
-  if (core->render) {
-    core->parallel.UpdateScreen(core->cpu->GetMem().mmio.vi);
-  } else {
-    core->parallel.UpdateScreen(core->cpu->GetMem().mmio.vi, false);
+  ImGui::Render();
+  if (ImGui::GetIO().ConfigFlags & ImGuiConfigFlags_ViewportsEnable){
+    ImGui::UpdatePlatformWindows();
+    ImGui::RenderPlatformWindowsDefault();
   }
+
+  if(!core->pause) {
+    core->parallel.UpdateScreen(*core.get());
+    return;
+  }
+
+  core->parallel.UpdateScreen(*core.get(), false);
 }
 
 void KaizenGui::LoadROM(const std::string &path) noexcept {
   actionPause.setEnabled(true);
   actionReset.setEnabled(true);
   actionStop.setEnabled(true);
-  emuThread.start();
   emuThread.core->LoadROM(path);
   const auto gameNameDB = emuThread.core->cpu->GetMem().rom.gameNameDB;
   Util::RPC::GetInstance().Update(Util::RPC::Playing, gameNameDB);
@@ -114,6 +121,7 @@ int KaizenGui::run() {
     }
 
     RenderUI();
+    emuThread.run();
   }
 
   return 0;