diff --git a/include/rt64_layer.h b/include/rt64_layer.h
index f7b0c41..6a58f6c 100644
--- a/include/rt64_layer.h
+++ b/include/rt64_layer.h
@@ -12,7 +12,7 @@ namespace ultramodern {
     struct WindowHandle;
 }
 
-RT64::Application* RT64Init(uint8_t* rom, uint8_t* rdram, ultramodern::WindowHandle window_handle);
+RT64::Application* RT64Init(uint8_t* rom, uint8_t* rdram, ultramodern::WindowHandle window_handle, bool developer_mode);
 void RT64UpdateConfig(RT64::Application* application, const ultramodern::GraphicsConfig& old_config, const ultramodern::GraphicsConfig& new_config);
 void RT64EnableInstantPresent(RT64::Application* application);
 void RT64SendDL(uint8_t* rdram, const OSTask* task);
diff --git a/lib/RT64-HLE b/lib/RT64-HLE
index ad88e63..e95a717 160000
--- a/lib/RT64-HLE
+++ b/lib/RT64-HLE
@@ -1 +1 @@
-Subproject commit ad88e63572251bc18daa5d5055a80c4c5f42c630
+Subproject commit e95a71768e6efb55dcc9daa02843879a9f79faa6
diff --git a/patches/camera_transform_tagging.c b/patches/camera_transform_tagging.c
index 6a22584..0a6e533 100644
--- a/patches/camera_transform_tagging.c
+++ b/patches/camera_transform_tagging.c
@@ -1,36 +1,181 @@
 #include "patches.h"
 #include "transform_ids.h"
 #include "z64cutscene.h"
+#include "overlays/kaleido_scope/ovl_kaleido_scope/z_kaleido_scope.h"
+#include "overlays/gamestates/ovl_file_choose/z_file_select.h"
 
-static bool interpolate_camera = true;
+static bool camera_interpolation_forced = false;
+static bool camera_skip_interpolation_forced = false;
+static bool camera_ignore_tracking = false;
+static bool in_kaleido = false;
+static bool prev_in_kaleido = false;
 
-s32 Play_ChangeCameraStatus(PlayState* this, s16 camId, s16 status) {
-    s16 camIdx = (camId == CAM_ID_NONE) ? this->activeCamId : camId;
+void camera_pre_play_update(PlayState* play) {
+}
 
-    if (status == CAM_STATUS_ACTIVE) {
-        this->activeCamId = camIdx;
+void camera_post_play_update(PlayState* play) {
+    // Track whether the game is in kaleido.
+    prev_in_kaleido = in_kaleido;
+
+    if ((play->pauseCtx.state != 0) || (play->pauseCtx.debugEditor != DEBUG_EDITOR_NONE)) {
+        in_kaleido = true;
+    }
+    else {
+        in_kaleido = false;
     }
-
-    recomp_printf("Changed play camera status %d %d\n", camId, status);
-
-    return Camera_ChangeStatus(this->cameraPtrs[camIdx], status);
 }
 
 s32 View_ApplyPerspective(View* view);
 s32 View_ApplyOrtho(View* view);
 
+void force_camera_interpolation() {
+    camera_interpolation_forced = true;
+}
+
+void force_camera_skip_interpolation() {
+    camera_skip_interpolation_forced = true;
+}
+
+void force_camera_ignore_tracking() {
+    camera_ignore_tracking = true;
+}
+
+void KaleidoScope_SetView(PauseContext* pauseCtx, f32 eyeX, f32 eyeY, f32 eyeZ) {
+    Vec3f eye;
+    Vec3f at;
+    Vec3f up;
+
+    eye.x = eyeX;
+    eye.y = eyeY;
+    eye.z = eyeZ;
+    at.x = at.y = at.z = 0.0f;
+    up.x = up.z = 0.0f;
+    up.y = 1.0f;
+
+    // @recomp Force interpolation for this view and skip tracking positions.
+    force_camera_interpolation();
+    force_camera_ignore_tracking();
+
+    View_LookAt(&pauseCtx->view, &eye, &at, &up);
+    View_Apply(&pauseCtx->view,
+               VIEW_ALL | VIEW_FORCE_VIEWING | VIEW_FORCE_VIEWPORT | VIEW_FORCE_PROJECTION_PERSPECTIVE);
+}
+
+
+void FileSelect_SetView(FileSelectState* this, f32 eyeX, f32 eyeY, f32 eyeZ) {
+    Vec3f eye;
+    Vec3f lookAt;
+    Vec3f up;
+
+    eye.x = eyeX;
+    eye.y = eyeY;
+    eye.z = eyeZ;
+
+    lookAt.x = lookAt.y = lookAt.z = 0.0f;
+
+    up.x = up.z = 0.0f;
+    up.y = 1.0f;
+    
+    // @recomp Force interpolation for this view and skip tracking positions.
+    force_camera_interpolation();
+    force_camera_ignore_tracking();
+
+    View_LookAt(&this->view, &eye, &lookAt, &up);
+    View_Apply(&this->view, VIEW_ALL | VIEW_FORCE_VIEWING | VIEW_FORCE_VIEWPORT | VIEW_FORCE_PROJECTION_PERSPECTIVE);
+}
+
+bool should_interpolate_perspective(Vec3f* eye, Vec3f* at) {
+    static Vec3f prev_eye = {0,0,0};
+    static Vec3f prev_at = {0,0,0};
+    static Vec3f eye_velocity = {0,0,0};
+    static Vec3f at_velocity = {0,0,0};
+
+    Vec3f predicted_eye;
+    Vec3f predicted_at;
+    // Predict the new eye and at positions based on the previous velocity and positions.
+    Math_Vec3f_Sum(&prev_eye, &eye_velocity, &predicted_eye);
+    Math_Vec3f_Sum(&prev_at, &at_velocity, &predicted_at);
+
+    // Calculate the current velocities from the previous and current positions.
+    Math_Vec3f_Diff(eye, &prev_eye, &eye_velocity);
+    Math_Vec3f_Diff(at, &prev_at, &at_velocity);
+
+    // Compare the predicted positions to the real positions.
+    float eye_dist = Math_Vec3f_DistXYZ(&predicted_eye, eye);
+    float at_dist = Math_Vec3f_DistXYZ(&predicted_at, at);
+
+    // Compare the velocities of the eye and at positions.
+    float velocity_diff = Math_Vec3f_DistXYZ(&eye_velocity, &at_velocity);
+
+    // Update the tracking for the previous positions with the new ones.
+    prev_eye = *eye;
+    prev_at = *at;
+
+    // These numbers are all picked via testing.
+
+    // If the velocity of both positions was the same, then they're moving together and should interpolate.
+    if (velocity_diff <= 3.0f && eye_dist <= 100.0f && at_dist <= 100.0f) {
+        return true;
+    }
+
+    // If the focus or position are basically the same across frames and the eye didn't move too far then it should probably be interpolated.
+    if (at_dist <= 10.0f && eye_dist <= 300.0f) {
+        return true;
+    }
+    if (eye_dist <= 10.0f && at_dist <= 300.0f) {
+        return true;
+    }
+
+    if (velocity_diff > 50.0f) {
+        return false;
+    }
+
+    if (at_dist > 50.0f) {
+        return false;
+    }
+
+    if (eye_dist > 300.0f) {
+        return false;
+    }
+
+    return true;
+}
+
 /**
  * Apply view to POLY_OPA_DISP, POLY_XLU_DISP (and OVERLAY_DISP if ortho)
  */
 void View_Apply(View* view, s32 mask) {
     mask = (view->flags & mask) | (mask >> 4);
+    
+    // @recomp Determine if the camera should be interpolated this frame.
+    bool interpolate_camera = false;
 
     if (mask & VIEW_PROJECTION_ORTHO) {
         View_ApplyOrtho(view);
     } else {
         View_ApplyPerspective(view);
+
+        // @recomp Determine if interpolation should occur based on the new eye and at positions.
+        if (!camera_ignore_tracking) {
+            interpolate_camera = should_interpolate_perspective(&view->eye, &view->at);
+        }
     }
-    
+    camera_ignore_tracking = false;
+
+    // Force skipping interpolation if the previous view was kaleido and this one isn't.
+    if (prev_in_kaleido && !in_kaleido) {
+        camera_skip_interpolation_forced = true;
+        recomp_printf("exited kaleido\n");
+    }
+
+    // @recomp Apply camera interpolation overrides.
+    if (camera_skip_interpolation_forced) {
+        interpolate_camera = false;
+    }
+    else if (camera_interpolation_forced) {
+        interpolate_camera = true;
+    }
+
     // @recomp Tag the camera matrices
     GraphicsContext* gfxCtx = view->gfxCtx;
     OPEN_DISPS(gfxCtx);
@@ -48,10 +193,10 @@ void View_Apply(View* view, s32 mask) {
             G_EX_COMPONENT_SKIP, G_EX_COMPONENT_SKIP, G_EX_COMPONENT_SKIP, G_EX_COMPONENT_SKIP, G_EX_COMPONENT_INTERPOLATE, G_EX_ORDER_LINEAR);
         gEXMatrixGroupSimple(POLY_XLU_DISP++, CAMERA_TRANSFORM_ID_START, G_EX_NOPUSH, G_MTX_PROJECTION,
             G_EX_COMPONENT_SKIP, G_EX_COMPONENT_SKIP, G_EX_COMPONENT_SKIP, G_EX_COMPONENT_SKIP, G_EX_COMPONENT_INTERPOLATE, G_EX_ORDER_LINEAR);
-        recomp_printf("Skipped camera interpolation\n");
     }
 
-    interpolate_camera = true;
+    camera_interpolation_forced = false;
+    camera_skip_interpolation_forced = false;
 
     CLOSE_DISPS(gfxCtx);
 }
diff --git a/patches/debug_patches.c b/patches/debug_patches.c
index c9a51c7..b11ad25 100644
--- a/patches/debug_patches.c
+++ b/patches/debug_patches.c
@@ -1,6 +1,5 @@
 #include "patches.h"
 #include "input.h"
-#include "z64debug_display.h"
 
 void Message_FindMessage(PlayState* play, u16 textId);
 extern SceneEntranceTableEntry sSceneEntranceTable[];
@@ -55,43 +54,3 @@ void debug_play_update(PlayState* play) {
         do_warp(play, pending_warp);
     }
 }
-
-extern Input D_801F6C18;
-
-// @recomp Patched to add a point to modify state before the frame's update.
-void Play_Main(GameState* thisx) {
-    static Input* prevInput = NULL;
-    PlayState* this = (PlayState*)thisx;
-
-    // @recomp
-    debug_play_update(this);
-    
-    // @recomp avoid unused variable warning
-    (void)prevInput;
-
-    prevInput = CONTROLLER1(&this->state);
-    DebugDisplay_Init();
-
-    {
-        GraphicsContext* gfxCtx = this->state.gfxCtx;
-
-        if (1) {
-            this->state.gfxCtx = NULL;
-        }
-        Play_Update(this);
-        this->state.gfxCtx = gfxCtx;
-    }
-
-    {
-        Input input = *CONTROLLER1(&this->state);
-
-        if (1) {
-            *CONTROLLER1(&this->state) = D_801F6C18;
-        }
-        Play_Draw(this);
-        *CONTROLLER1(&this->state) = input;
-    }
-
-    CutsceneManager_Update();
-    CutsceneManager_ClearWaiting();
-}
diff --git a/patches/play_patches.c b/patches/play_patches.c
new file mode 100644
index 0000000..804a351
--- /dev/null
+++ b/patches/play_patches.c
@@ -0,0 +1,44 @@
+#include "play_patches.h"
+#include "z64debug_display.h"
+
+extern Input D_801F6C18;
+
+// @recomp Patched to add hooks for various added functionality.
+void Play_Main(GameState* thisx) {
+    static Input* prevInput = NULL;
+    PlayState* this = (PlayState*)thisx;
+
+    // @recomp
+    debug_play_update(this);
+    
+    // @recomp avoid unused variable warning
+    (void)prevInput;
+
+    prevInput = CONTROLLER1(&this->state);
+    DebugDisplay_Init();
+
+    {
+        GraphicsContext* gfxCtx = this->state.gfxCtx;
+
+        if (1) {
+            this->state.gfxCtx = NULL;
+        }
+        camera_pre_play_update(this);
+        Play_Update(this);
+        camera_post_play_update(this);
+        this->state.gfxCtx = gfxCtx;
+    }
+
+    {
+        Input input = *CONTROLLER1(&this->state);
+
+        if (1) {
+            *CONTROLLER1(&this->state) = D_801F6C18;
+        }
+        Play_Draw(this);
+        *CONTROLLER1(&this->state) = input;
+    }
+
+    CutsceneManager_Update();
+    CutsceneManager_ClearWaiting();
+}
diff --git a/patches/play_patches.h b/patches/play_patches.h
new file mode 100644
index 0000000..3af7df4
--- /dev/null
+++ b/patches/play_patches.h
@@ -0,0 +1,10 @@
+#ifndef __PLAY_PATCHES_H__
+#define __PLAY_PATCHES_H__
+
+#include "patches.h"
+
+void debug_play_update(PlayState* play);
+void camera_pre_play_update(PlayState* play);
+void camera_post_play_update(PlayState* play);
+
+#endif
diff --git a/patches/transform_ids.h b/patches/transform_ids.h
index 5dc0f10..3a29f31 100644
--- a/patches/transform_ids.h
+++ b/patches/transform_ids.h
@@ -34,4 +34,7 @@ static inline u32 actor_transform_id(Actor* actor) {
     return (actor_id * ACTOR_TRANSFORM_ID_COUNT) + ACTOR_TRANSFORM_ID_START;
 }
 
+void force_camera_interpolation();
+void force_camera_skip_interpolation();
+
 #endif
diff --git a/src/game/config.cpp b/src/game/config.cpp
index f67575d..6de4d16 100644
--- a/src/game/config.cpp
+++ b/src/game/config.cpp
@@ -15,6 +15,14 @@
 constexpr std::u8string_view graphics_filename = u8"graphics.json";
 constexpr std::u8string_view controls_filename = u8"controls.json";
 
+constexpr auto res_default            = ultramodern::Resolution::Auto;
+constexpr auto wm_default             = ultramodern::WindowMode::Windowed;
+constexpr auto ar_default             = RT64::UserConfiguration::AspectRatio::Expand;
+constexpr auto msaa_default           = RT64::UserConfiguration::Antialiasing::MSAA4X;
+constexpr auto rr_default             = RT64::UserConfiguration::RefreshRate::Display;
+constexpr int rr_manual_default       = 60;
+constexpr bool developer_mode_default = false;
+
 namespace ultramodern {
     void to_json(json& j, const GraphicsConfig& config) {
         j = json{
@@ -24,16 +32,29 @@ namespace ultramodern {
             {"msaa_option",     config.msaa_option},
             {"rr_option",       config.rr_option},
             {"rr_manual_value", config.rr_manual_value},
+            {"developer_mode",  config.developer_mode},
         };
     }
 
+    template <typename T>
+    void from_or_default(const json& j, const std::string& key, T& out, T default_value) {
+        auto find_it = j.find(key);
+        if (find_it != j.end()) {
+            find_it->get_to(out);
+        }
+        else {
+            out = default_value;
+        }
+    }
+
     void from_json(const json& j, GraphicsConfig& config) {
-        j.at("res_option")     .get_to(config.res_option);
-        j.at("wm_option")      .get_to(config.wm_option);
-        j.at("ar_option")      .get_to(config.ar_option);
-        j.at("msaa_option")    .get_to(config.msaa_option);
-        j.at("rr_option")      .get_to(config.rr_option);
-        j.at("rr_manual_value").get_to(config.rr_manual_value);
+        from_or_default(j, "res_option",      config.res_option, res_default);
+        from_or_default(j, "wm_option",       config.wm_option, wm_default);
+        from_or_default(j, "ar_option",       config.ar_option, ar_default);
+        from_or_default(j, "msaa_option",     config.msaa_option, msaa_default);
+        from_or_default(j, "rr_option",       config.rr_option, rr_default);
+        from_or_default(j, "rr_manual_value", config.rr_manual_value, rr_manual_default);
+        from_or_default(j, "developer_mode",  config.developer_mode, developer_mode_default);
     }
 }
 
@@ -110,12 +131,13 @@ void recomp::reset_input_bindings() {
 
 void recomp::reset_graphics_options() {
     ultramodern::GraphicsConfig new_config{};
-    new_config.res_option = ultramodern::Resolution::Auto;
-    new_config.wm_option = ultramodern::WindowMode::Windowed;
-    new_config.ar_option = RT64::UserConfiguration::AspectRatio::Expand;
-    new_config.msaa_option = RT64::UserConfiguration::Antialiasing::MSAA4X;
-    new_config.rr_option = RT64::UserConfiguration::RefreshRate::Display;
-    new_config.rr_manual_value = 60;
+    new_config.res_option = res_default;
+    new_config.wm_option = wm_default;
+    new_config.ar_option = ar_default;
+    new_config.msaa_option = msaa_default;
+    new_config.rr_option = rr_default;
+    new_config.rr_manual_value = rr_manual_default;
+    new_config.developer_mode = developer_mode_default;
     ultramodern::set_graphics_config(new_config);
 }
 
diff --git a/src/recomp/rt64_layer.cpp b/src/recomp/rt64_layer.cpp
index 8280fd7..b91b447 100644
--- a/src/recomp/rt64_layer.cpp
+++ b/src/recomp/rt64_layer.cpp
@@ -61,11 +61,11 @@ typedef struct {
 #endif
 
 #if defined(_WIN32)
-extern "C" RT64::Application* InitiateGFXWindows(GFX_INFO Gfx_Info, HWND hwnd, DWORD threadId);
+extern "C" RT64::Application* InitiateGFXWindows(GFX_INFO Gfx_Info, HWND hwnd, DWORD threadId, uint8_t debug);
 #elif defined(__ANDROID__)
 static_assert(false && "Unimplemented");
 #elif defined(__linux__)
-extern "C" RT64::Application* InitiateGFXLinux(GFX_INFO Gfx_Info, Window window, Display *display);
+extern "C" RT64::Application* InitiateGFXLinux(GFX_INFO Gfx_Info, Window window, Display *display, uint8_t debug);
 #else
 static_assert(false && "Unimplemented");
 #endif
@@ -130,22 +130,10 @@ RT64::UserConfiguration::Antialiasing compute_max_supported_aa(RT64::RenderSampl
     return RT64::UserConfiguration::Antialiasing::None;
 }
 
-RT64::Application* RT64Init(uint8_t* rom, uint8_t* rdram, ultramodern::WindowHandle window_handle) {
+RT64::Application* RT64Init(uint8_t* rom, uint8_t* rdram, ultramodern::WindowHandle window_handle, bool debug) {
     set_rt64_hooks();
-    // Dynamic loading
-    //auto RT64 = LoadLibrary("RT64.dll");
-    //if (RT64 == 0) {
-    //    fprintf(stdout, "Failed to load RT64\n");
-    //    std::exit(EXIT_FAILURE);
-    //}
-    //GET_FUNC(RT64, InitiateGFX);
-    //GET_FUNC(RT64, ProcessRDPList);
-    //GET_FUNC(RT64, ProcessDList);
-    //GET_FUNC(RT64, UpdateScreen);
 
     GFX_INFO gfx_info{};
-    // gfx_info.hWnd = window_handle;
-    // gfx_info.hStatusBar = nullptr;
 
     gfx_info.HEADER = rom;
     gfx_info.RDRAM = rdram;
@@ -185,11 +173,11 @@ RT64::Application* RT64Init(uint8_t* rom, uint8_t* rdram, ultramodern::WindowHan
     gfx_info.RDRAM_SIZE = &RDRAM_SIZE;
 
 #if defined(_WIN32)
-    RT64::Application* ret = InitiateGFXWindows(gfx_info, window_handle.window, window_handle.thread_id);
+    RT64::Application* ret = InitiateGFXWindows(gfx_info, window_handle.window, window_handle.thread_id, debug);
 #elif defined(__ANDROID__)
     static_assert(false && "Unimplemented");
 #elif defined(__linux__)
-	RT64::Application* ret = InitiateGFXLinux(gfx_info, window_handle.window, window_handle.display);
+	RT64::Application* ret = InitiateGFXLinux(gfx_info, window_handle.window, window_handle.display, debug);
 #else
     static_assert(false && "Unimplemented");
 #endif
diff --git a/ultramodern/config.hpp b/ultramodern/config.hpp
index 1086d75..cbaaf16 100644
--- a/ultramodern/config.hpp
+++ b/ultramodern/config.hpp
@@ -23,6 +23,7 @@ namespace ultramodern {
 		RT64::UserConfiguration::Antialiasing msaa_option;
 		RT64::UserConfiguration::RefreshRate rr_option;
 		int rr_manual_value;
+		bool developer_mode;
 
 		auto operator<=>(const GraphicsConfig& rhs) const = default;
 	};
diff --git a/ultramodern/events.cpp b/ultramodern/events.cpp
index cc025ff..6ba8c45 100644
--- a/ultramodern/events.cpp
+++ b/ultramodern/events.cpp
@@ -276,7 +276,7 @@ void gfx_thread_func(uint8_t* rdram, uint8_t* rom, std::atomic_flag* thread_read
 
     ultramodern::GraphicsConfig old_config;
 
-    RT64::Application* application = RT64Init(rom, rdram, window_handle);
+    RT64::Application* application = RT64Init(rom, rdram, window_handle, cur_config.load().developer_mode);
 
     if (application == nullptr) {
         throw std::runtime_error("Failed to initialize RT64!");