diff --git a/libultraship/libultraship/ConfigFile.cpp b/libultraship/libultraship/ConfigFile.cpp
index 984bd34eacf..43dde4d8a9a 100644
--- a/libultraship/libultraship/ConfigFile.cpp
+++ b/libultraship/libultraship/ConfigFile.cpp
@@ -69,8 +69,8 @@ namespace Ship {
 		(*this)["KEYBOARD SHORTCUTS"]["KEY_FULLSCREEN"] = std::to_string(0x044);
 		(*this)["KEYBOARD SHORTCUTS"]["KEY_CONSOLE"] = std::to_string(0x029);
 
-		(*this)["WINDOW"]["WINDOW WIDTH"] = std::to_string(320);
-		(*this)["WINDOW"]["WINDOW HEIGHT"] = std::to_string(240);
+		(*this)["WINDOW"]["WINDOW WIDTH"] = std::to_string(640);
+		(*this)["WINDOW"]["WINDOW HEIGHT"] = std::to_string(480);
 		(*this)["WINDOW"]["FULLSCREEN WIDTH"] = std::to_string(1920);
 		(*this)["WINDOW"]["FULLSCREEN HEIGHT"] = std::to_string(1080);
 		(*this)["WINDOW"]["FULLSCREEN"] = std::to_string(false);
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_dxgi.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_dxgi.cpp
index d257d7b0837..6f7350fcec0 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_dxgi.cpp
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_dxgi.cpp
@@ -278,7 +278,7 @@ static LRESULT CALLBACK gfx_dxgi_wnd_proc(HWND h_wnd, UINT message, WPARAM w_par
     return 0;
 }
 
-void gfx_dxgi_init(const char *game_name, bool start_in_fullscreen) {
+void gfx_dxgi_init(const char *game_name, bool start_in_fullscreen, uint32_t width, uint32_t height) {
     LARGE_INTEGER qpc_init, qpc_freq;
     QueryPerformanceCounter(&qpc_init);
     QueryPerformanceFrequency(&qpc_freq);
@@ -319,7 +319,7 @@ void gfx_dxgi_init(const char *game_name, bool start_in_fullscreen) {
 
     run_as_dpi_aware([&] () {
         // We need to be dpi aware when calculating the size
-        RECT wr = {0, 0, DESIRED_SCREEN_WIDTH, DESIRED_SCREEN_HEIGHT};
+        RECT wr = {0, 0, width, height};
         AdjustWindowRect(&wr, WS_OVERLAPPEDWINDOW, FALSE);
 
         dxgi.h_wnd = CreateWindowW(WINCLASS_NAME, w_title, WS_OVERLAPPEDWINDOW,
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_glx.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_glx.cpp
index d450558b2e6..43dae33ffec 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_glx.cpp
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_glx.cpp
@@ -298,7 +298,7 @@ static bool gfx_glx_check_extension(const char *extensions, const char *extensio
     return false;
 }
 
-static void gfx_glx_init(const char *game_name, bool start_in_fullscreen) {
+static void gfx_glx_init(const char *game_name, bool start_in_fullscreen, u_int32_t width, uint32_t height) {
     // On NVIDIA proprietary driver, make the driver queue up to two frames on glXSwapBuffers,
     // which means that glXSwapBuffers should be non-blocking,
     // if we are sure to wait at least one vsync interval between calls.
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_pc.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_pc.cpp
index cf54038670c..8e42cd7316b 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_pc.cpp
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_pc.cpp
@@ -60,8 +60,7 @@ using namespace std;
 #define SCALE_3_8(VAL_) ((VAL_) * 0x24)
 #define SCALE_8_3(VAL_) ((VAL_) / 0x24)
 
-#define SCREEN_WIDTH 320
-#define SCREEN_HEIGHT 240
+// SCREEN_WIDTH and SCREEN_HEIGHT are defined in the headerfile
 #define HALF_SCREEN_WIDTH (SCREEN_WIDTH / 2)
 #define HALF_SCREEN_HEIGHT (SCREEN_HEIGHT / 2)
 
@@ -2662,15 +2661,15 @@ void gfx_get_dimensions(uint32_t *width, uint32_t *height) {
     gfx_wapi->get_dimensions(width, height);
 }
 
-void gfx_init(struct GfxWindowManagerAPI *wapi, struct GfxRenderingAPI *rapi, const char *game_name, bool start_in_fullscreen) {
+void gfx_init(struct GfxWindowManagerAPI *wapi, struct GfxRenderingAPI *rapi, const char *game_name, bool start_in_fullscreen, uint32_t width, uint32_t height) {
     gfx_wapi = wapi;
     gfx_rapi = rapi;
-    gfx_wapi->init(game_name, start_in_fullscreen);
+    gfx_wapi->init(game_name, start_in_fullscreen, width, height);
     gfx_rapi->init();
-    gfx_rapi->update_framebuffer_parameters(0, SCREEN_WIDTH, SCREEN_HEIGHT, 1, false, true, true, true);
+    gfx_rapi->update_framebuffer_parameters(0, width, height, 1, false, true, true, true);
     gfx_current_dimensions.internal_mul = 1;
-    gfx_current_dimensions.width = SCREEN_WIDTH;
-    gfx_current_dimensions.height = SCREEN_HEIGHT;
+    gfx_current_dimensions.width = width;
+    gfx_current_dimensions.height = height;
     game_framebuffer = gfx_rapi->create_framebuffer();
     game_framebuffer_msaa_resolved = gfx_rapi->create_framebuffer();
 
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_pc.h b/libultraship/libultraship/Lib/Fast3D/gfx_pc.h
index 34fc4fcc459..f07147c147f 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_pc.h
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_pc.h
@@ -10,6 +10,10 @@
 
 #include "U64/PR/ultra64/types.h"
 
+// TODO figure out why changing these to 640x480 makes the game only render in a quarter of the window
+#define SCREEN_WIDTH 320
+#define SCREEN_HEIGHT 240
+
 struct GfxRenderingAPI;
 struct GfxWindowManagerAPI;
 
@@ -64,7 +68,7 @@ extern uint32_t gfx_msaa_level;
 
 }
 
-void gfx_init(struct GfxWindowManagerAPI* wapi, struct GfxRenderingAPI* rapi, const char* game_name, bool start_in_fullscreen);
+void gfx_init(struct GfxWindowManagerAPI* wapi, struct GfxRenderingAPI* rapi, const char* game_name, bool start_in_fullscreen, uint32_t width = SCREEN_WIDTH, uint32_t height = SCREEN_HEIGHT);
 struct GfxRenderingAPI* gfx_get_current_rendering_api(void);
 void gfx_start_frame(void);
 void gfx_run(Gfx* commands, const std::unordered_map<Mtx*, MtxF>& mtx_replacements);
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_sdl2.cpp b/libultraship/libultraship/Lib/Fast3D/gfx_sdl2.cpp
index 87940a1a3b7..7244408193d 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_sdl2.cpp
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_sdl2.cpp
@@ -130,7 +130,7 @@ static int target_fps = 60;
 #define FRAME_INTERVAL_US_NUMERATOR 1000000
 #define FRAME_INTERVAL_US_DENOMINATOR (target_fps)
 
-static void gfx_sdl_init(const char *game_name, bool start_in_fullscreen) {
+static void gfx_sdl_init(const char *game_name, bool start_in_fullscreen, uint32_t width, uint32_t height) {
     SDL_Init(SDL_INIT_VIDEO);
 
     SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
@@ -153,6 +153,9 @@ static void gfx_sdl_init(const char *game_name, bool start_in_fullscreen) {
     char title[512];
     int len = sprintf(title, "%s (%s)", game_name, GFX_API_NAME);
 
+    window_width = width;
+    window_height = height;
+
     wnd = SDL_CreateWindow(title, SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
             window_width, window_height, SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI);
     SDL_GL_GetDrawableSize(wnd, &window_width, &window_height);
diff --git a/libultraship/libultraship/Lib/Fast3D/gfx_window_manager_api.h b/libultraship/libultraship/Lib/Fast3D/gfx_window_manager_api.h
index bd45ccdf407..50618f661ab 100644
--- a/libultraship/libultraship/Lib/Fast3D/gfx_window_manager_api.h
+++ b/libultraship/libultraship/Lib/Fast3D/gfx_window_manager_api.h
@@ -5,7 +5,7 @@
 #include <stdbool.h>
 
 struct GfxWindowManagerAPI {
-    void (*init)(const char *game_name, bool start_in_fullscreen);
+    void (*init)(const char *game_name, bool start_in_fullscreen, uint32_t width, uint32_t height);
     void (*set_keyboard_callbacks)(bool (*on_key_down)(int scancode), bool (*on_key_up)(int scancode), void (*on_all_keys_up)(void));
     void (*set_fullscreen_changed_callback)(void (*on_fullscreen_changed)(bool is_now_fullscreen));
     void (*set_fullscreen)(bool enable);
diff --git a/libultraship/libultraship/Window.cpp b/libultraship/libultraship/Window.cpp
index 82506bd1ef0..23d19fb7f68 100644
--- a/libultraship/libultraship/Window.cpp
+++ b/libultraship/libultraship/Window.cpp
@@ -254,15 +254,18 @@ namespace Ship {
 
         SetAudioPlayer();
         bIsFullscreen = Ship::stob(Conf["WINDOW"]["FULLSCREEN"]);
-        dwWidth = Ship::stoi(Conf["WINDOW"]["WINDOW WIDTH"], 320);
-        dwHeight = Ship::stoi(Conf["WINDOW"]["WINDOW HEIGHT"], 240);
-        dwWidth = Ship::stoi(Conf["WINDOW"]["FULLSCREEN WIDTH"], 1920);
-        dwHeight = Ship::stoi(Conf["WINDOW"]["FULLSCREEN HEIGHT"], 1080);
+        if (bIsFullscreen) {
+            dwWidth = Ship::stoi(Conf["WINDOW"]["FULLSCREEN WIDTH"], 1920);
+            dwHeight = Ship::stoi(Conf["WINDOW"]["FULLSCREEN HEIGHT"], 1080);
+        } else {
+            dwWidth = Ship::stoi(Conf["WINDOW"]["WINDOW WIDTH"], 640);
+            dwHeight = Ship::stoi(Conf["WINDOW"]["WINDOW HEIGHT"], 480);
+        }
         dwMenubar = Ship::stoi(Conf["WINDOW"]["menubar"], 0);
         const std::string& gfx_backend = Conf["WINDOW"]["GFX BACKEND"];
         SetWindowManager(&WmApi, &RenderingApi, gfx_backend);
 
-        gfx_init(WmApi, RenderingApi, GetContext()->GetName().c_str(), bIsFullscreen);
+        gfx_init(WmApi, RenderingApi, GetContext()->GetName().c_str(), bIsFullscreen, dwWidth, dwHeight);
         WmApi->set_fullscreen_changed_callback(Window::OnFullscreenChanged);
         WmApi->set_keyboard_callbacks(Window::KeyDown, Window::KeyUp, Window::AllKeysUp);
     }