diff --git a/components/genesis/src/genesis.cpp b/components/genesis/src/genesis.cpp
index fd1a539..cfcf102 100644
--- a/components/genesis/src/genesis.cpp
+++ b/components/genesis/src/genesis.cpp
@@ -180,13 +180,10 @@ void init_genesis(uint8_t *romdata, size_t rom_data_size) {
 }
 
 void IRAM_ATTR run_genesis_rom() {
-  static auto& emu = BoxEmu::get();
-  static auto& box = espp::EspBox::get();
-
   auto start = esp_timer_get_time();
   // handle input here (see system.h and use input.pad and input.system)
   static GamepadState previous_state = {};
-  auto state = emu.gamepad_state();
+  auto state = BoxEmu::get().gamepad_state();
 
   // set frameskip to be 3 if muted, 60 otherwise
   frameskip = 3; // hal::is_muted() ? 3 : 60;
@@ -227,7 +224,7 @@ void IRAM_ATTR run_genesis_rom() {
 
   gwenesis_vdp_render_config();
 
-  bool sound_enabled = !box.is_muted();
+  bool sound_enabled = !espp::EspBox::get().is_muted();
 
   /* Reset the difference clocks and audio index */
   system_clock = 0;
@@ -314,21 +311,21 @@ void IRAM_ATTR run_genesis_rom() {
     // copy the palette
     memcpy(palette, CRAM565, PALETTE_SIZE * sizeof(uint16_t));
     // set the palette
-    emu.palette(palette, PALETTE_SIZE);
+    BoxEmu::get().palette(palette, PALETTE_SIZE);
     // push the frame buffer to the display task
-    emu.push_frame(frame_buffer);
+    BoxEmu::get().push_frame(frame_buffer);
     // ping pong the frame buffer
     frame_buffer_index = !frame_buffer_index;
     frame_buffer = frame_buffer_index
-      ? box.frame_buffer1()
-      : box.frame_buffer0();
+      ? espp::EspBox::get().frame_buffer1()
+      : espp::EspBox::get().frame_buffer0();
     gwenesis_vdp_set_buffer(frame_buffer);
   }
 
   if (sound_enabled) {
     // push the audio buffer to the audio task
     int audio_len = REG1_PAL ? GWENESIS_AUDIO_BUFFER_LENGTH_PAL : GWENESIS_AUDIO_BUFFER_LENGTH_NTSC;
-    box.play_audio((uint8_t*)gwenesis_ym2612_buffer, audio_len);
+    espp::EspBox::get().play_audio((uint8_t*)gwenesis_ym2612_buffer, audio_len);
   }
 
   // manage statistics
diff --git a/components/nes/src/video_audio.cpp b/components/nes/src/video_audio.cpp
index a2d085a..26d7798 100644
--- a/components/nes/src/video_audio.cpp
+++ b/components/nes/src/video_audio.cpp
@@ -40,13 +40,12 @@ static void (*audio_callback)(void *buffer, int length) = NULL;
 
 extern "C" void do_audio_frame() {
     if (audio_callback == NULL) return;
-    static auto& box = espp::EspBox::get();
     static int num_channels = 2;
-    static int num_samples = box.audio_sample_rate() * num_channels / NES_REFRESH_RATE;
+    static int num_samples = espp::EspBox::get().audio_sample_rate() * num_channels / NES_REFRESH_RATE;
     static int num_bytes = num_samples * sizeof(int16_t);
     static int16_t *audio_frame = (int16_t*)heap_caps_malloc(num_bytes, MALLOC_CAP_8BIT | MALLOC_CAP_SPIRAM);
     audio_callback(audio_frame, num_samples);
-    box.play_audio((uint8_t*)audio_frame, num_bytes);
+    espp::EspBox::get().play_audio((uint8_t*)audio_frame, num_bytes);
 }
 
 extern "C" void osd_setsound(void (*playfunc)(void *buffer, int length))
@@ -173,15 +172,13 @@ static void free_write(int num_dirties, rect_t *dirty_rects)
 }
 
 static void custom_blit(const bitmap_t *bmp, int num_dirties, rect_t *dirty_rects) {
-  static auto& box = espp::EspBox::get();
-  static auto& emu = BoxEmu::get();
-    uint8_t *lcdfb = box.frame_buffer0();
+    uint8_t *lcdfb = espp::EspBox::get().frame_buffer0();
     if (bmp->line[0] != NULL)
     {
         memcpy(lcdfb, bmp->line[0], 256 * 224);
 
         void* arg = (void*)lcdfb;
-        emu.push_frame(arg);
+        BoxEmu::get().push_frame(arg);
     }
 }
 
@@ -193,8 +190,7 @@ static int ConvertJoystickInput()
 {
 	int result = 0;
 
-    static auto& emu = BoxEmu::get();
-    auto state = emu.gamepad_state();
+    auto state = BoxEmu::get().gamepad_state();
 
 	if (!state.a)
 		result |= (1<<13);
diff --git a/components/sms/src/sms.cpp b/components/sms/src/sms.cpp
index 25b7c29..038249b 100644
--- a/components/sms/src/sms.cpp
+++ b/components/sms/src/sms.cpp
@@ -111,11 +111,9 @@ void init_gg(uint8_t *romdata, size_t rom_data_size) {
 }
 
 void run_sms_rom() {
-  static auto& emu = BoxEmu::get();
-  static auto& box = espp::EspBox::get();
   auto start = esp_timer_get_time();
   // handle input here (see system.h and use input.pad and input.system)
-  auto state = emu.gamepad_state();
+  auto state = BoxEmu::get().gamepad_state();
 
   // pad[0] is player 0
   input.pad[0] = 0;
@@ -147,15 +145,15 @@ void run_sms_rom() {
       palette[i] = (rgb565 >> 8) | (rgb565 << 8);
     }
     // set the palette
-    emu.palette(palette, PALETTE_SIZE);
+    BoxEmu::get().palette(palette, PALETTE_SIZE);
 
     // render the frame
-    emu.push_frame((uint8_t*)bitmap.data + frame_buffer_offset);
+    BoxEmu::get().push_frame((uint8_t*)bitmap.data + frame_buffer_offset);
     // ping pong the frame buffer
     frame_buffer_index = !frame_buffer_index;
     bitmap.data = frame_buffer_index
-      ? (uint8_t*)box.frame_buffer1()
-      : (uint8_t*)box.frame_buffer0();
+      ? (uint8_t*)espp::EspBox::get().frame_buffer1()
+      : (uint8_t*)espp::EspBox::get().frame_buffer0();
   } else {
     system_frame(1);
   }
@@ -180,7 +178,7 @@ void run_sms_rom() {
   auto sms_audio_buffer_len = sms_snd.sample_count - 1;
 
   // push the audio buffer to the audio task
-  box.play_audio((uint8_t*)sms_audio_buffer, sms_audio_buffer_len * 2 * 2); // 2 channels, 2 bytes per sample
+  espp::EspBox::get().play_audio((uint8_t*)sms_audio_buffer, sms_audio_buffer_len * 2 * 2); // 2 channels, 2 bytes per sample
 
   // update unlock based on x button
   static bool last_x = false;