diff --git a/lib/protomatter b/lib/protomatter
index c9c1189e9d..98a2da6da4 160000
--- a/lib/protomatter
+++ b/lib/protomatter
@@ -1 +1 @@
-Subproject commit c9c1189e9d6200bb09bf4a87d84be9459cae481b
+Subproject commit 98a2da6da4bdbfee8f3ab2334871e8c360dccae3
diff --git a/main.c b/main.c
index 2607217e1b..3d4d665beb 100644
--- a/main.c
+++ b/main.c
@@ -219,6 +219,10 @@ STATIC void stop_mp(void) {
     usb_background();
     #endif
 
+    // Set the qstr pool back to the const pools. The heap allocated ones will
+    // be overwritten.
+    qstr_reset();
+
     gc_deinit();
 }
 
diff --git a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
index e45e4bc707..d89c365b68 100644
--- a/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
+++ b/ports/espressif/boards/adafruit_feather_esp32s3_4mbflash_2mbpsram/mpconfigboard.mk
@@ -7,7 +7,7 @@ IDF_TARGET = esp32s3
 
 CIRCUITPY_ESP_FLASH_SIZE = 4MB
 CIRCUITPY_ESP_FLASH_MODE = qio
-CIRCUITPY_ESP_FLASH_FREQ = 40m
+CIRCUITPY_ESP_FLASH_FREQ = 80m
 
 CIRCUITPY_ESP_PSRAM_SIZE = 2MB
 CIRCUITPY_ESP_PSRAM_MODE = qio
diff --git a/ports/espressif/mpconfigport.mk b/ports/espressif/mpconfigport.mk
index cc2ddf9f07..84ac4f3e34 100644
--- a/ports/espressif/mpconfigport.mk
+++ b/ports/espressif/mpconfigport.mk
@@ -39,8 +39,7 @@ CIRCUITPY_NVM ?= 1
 # Turn off because it uses the old I2S driver which conflicts with the new ADC driver.
 CIRCUITPY_PARALLELDISPLAY ?= 0
 CIRCUITPY_PS2IO ?= 1
-# Disabled temporarily
-CIRCUITPY_RGBMATRIX ?= 0
+CIRCUITPY_RGBMATRIX ?= 1
 CIRCUITPY_ROTARYIO ?= 1
 CIRCUITPY_SYNTHIO_MAX_CHANNELS ?= 12
 CIRCUITPY_TOUCHIO_USE_NATIVE ?= 1
diff --git a/py/qstr.c b/py/qstr.c
index 5ff8b3bd54..6b7aead5c8 100644
--- a/py/qstr.c
+++ b/py/qstr.c
@@ -122,9 +122,13 @@ extern const qstr_pool_t MICROPY_QSTR_EXTRA_POOL;
 #define CONST_POOL mp_qstr_const_pool
 #endif
 
-void qstr_init(void) {
+void qstr_reset(void) {
     MP_STATE_VM(last_pool) = (qstr_pool_t *)&CONST_POOL; // we won't modify the const_pool since it has no allocated room left
     MP_STATE_VM(qstr_last_chunk) = NULL;
+}
+
+void qstr_init(void) {
+    qstr_reset();
 
     #if MICROPY_PY_THREAD && !MICROPY_PY_THREAD_GIL
     mp_thread_mutex_init(&MP_STATE_VM(qstr_mutex));
diff --git a/py/qstr.h b/py/qstr.h
index c6c9768d05..24e0e756a3 100644
--- a/py/qstr.h
+++ b/py/qstr.h
@@ -78,6 +78,7 @@ typedef struct _qstr_pool_t {
 
 #define QSTR_TOTAL() (MP_STATE_VM(last_pool)->total_prev_len + MP_STATE_VM(last_pool)->len)
 
+void qstr_reset(void);
 void qstr_init(void);
 
 mp_uint_t qstr_compute_hash(const byte *data, size_t len);
diff --git a/shared-bindings/displayio/Display.c b/shared-bindings/displayio/Display.c
index 5d3c29b8aa..6b73ad2b6f 100644
--- a/shared-bindings/displayio/Display.c
+++ b/shared-bindings/displayio/Display.c
@@ -276,7 +276,7 @@ STATIC mp_obj_t displayio_display_obj_refresh(size_t n_args, const mp_obj_t *pos
     mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
 
     displayio_display_obj_t *self = native_display(pos_args[0]);
-    uint32_t maximum_ms_per_real_frame = 0xffffffff;
+    uint32_t maximum_ms_per_real_frame = NO_FPS_LIMIT;
     mp_int_t minimum_frames_per_second = args[ARG_minimum_frames_per_second].u_int;
     if (minimum_frames_per_second > 0) {
         maximum_ms_per_real_frame = 1000 / minimum_frames_per_second;
@@ -284,7 +284,7 @@ STATIC mp_obj_t displayio_display_obj_refresh(size_t n_args, const mp_obj_t *pos
 
     uint32_t target_ms_per_frame;
     if (args[ARG_target_frames_per_second].u_obj == mp_const_none) {
-        target_ms_per_frame = 0xffffffff;
+        target_ms_per_frame = NO_FPS_LIMIT;
     } else {
         target_ms_per_frame = 1000 / mp_obj_get_int(args[ARG_target_frames_per_second].u_obj);
     }
diff --git a/shared-bindings/displayio/Display.h b/shared-bindings/displayio/Display.h
index 50fb7c4bfd..af813866ed 100644
--- a/shared-bindings/displayio/Display.h
+++ b/shared-bindings/displayio/Display.h
@@ -35,6 +35,7 @@
 extern const mp_obj_type_t displayio_display_type;
 
 #define NO_BRIGHTNESS_COMMAND 0x100
+#define NO_FPS_LIMIT 0xffffffff
 
 void common_hal_displayio_display_construct(displayio_display_obj_t *self,
     mp_obj_t bus, uint16_t width, uint16_t height,
diff --git a/shared-bindings/framebufferio/FramebufferDisplay.c b/shared-bindings/framebufferio/FramebufferDisplay.c
index 45eedcaa95..955761c273 100644
--- a/shared-bindings/framebufferio/FramebufferDisplay.c
+++ b/shared-bindings/framebufferio/FramebufferDisplay.c
@@ -100,39 +100,55 @@ static framebufferio_framebufferdisplay_obj_t *native_display(mp_obj_t display_o
 }
 
 //|     def refresh(
-//|         self, *, target_frames_per_second: int = 60, minimum_frames_per_second: int = 1
+//|         self,
+//|         *,
+//|         target_frames_per_second: Optional[int] = None,
+//|         minimum_frames_per_second: int = 0
 //|     ) -> bool:
-//|         """When auto refresh is off, waits for the target frame rate and then refreshes the display,
-//|         returning True. If the call has taken too long since the last refresh call for the given
-//|         target frame rate, then the refresh returns False immediately without updating the screen to
+//|         """When auto_refresh is off, and :py:attr:`target_frames_per_second` is not `None` this waits
+//|         for the target frame rate and then refreshes the display,
+//|         returning `True`. If the call has taken too long since the last refresh call for the given
+//|         target frame rate, then the refresh returns `False` immediately without updating the screen to
 //|         hopefully help getting caught up.
 //|
 //|         If the time since the last successful refresh is below the minimum frame rate, then an
-//|         exception will be raised. Set minimum_frames_per_second to 0 to disable.
+//|         exception will be raised. The default :py:attr:`minimum_frames_per_second` of 0 disables this behavior.
 //|
-//|         When auto refresh is on, updates the display immediately. (The display will also update
+//|         When auto_refresh is off, and :py:attr:`target_frames_per_second` is `None` this
+//|         will update the display immediately.
+//|
+//|         When auto_refresh is on, updates the display immediately. (The display will also update
 //|         without calls to this.)
 //|
-//|         :param int target_frames_per_second: How many times a second `refresh` should be called and the screen updated.
+//|         :param Optional[int] target_frames_per_second: The target frame rate that :py:func:`refresh` should try to
+//|             achieve. Set to `None` for immediate refresh.
 //|         :param int minimum_frames_per_second: The minimum number of times the screen should be updated per second.
 //|         """
 //|         ...
 STATIC mp_obj_t framebufferio_framebufferdisplay_obj_refresh(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
     enum { ARG_target_frames_per_second, ARG_minimum_frames_per_second };
     static const mp_arg_t allowed_args[] = {
-        { MP_QSTR_target_frames_per_second, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 60} },
-        { MP_QSTR_minimum_frames_per_second, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 1} },
+        { MP_QSTR_target_frames_per_second, MP_ARG_OBJ | MP_ARG_KW_ONLY, {.u_obj = mp_const_none} },
+        { MP_QSTR_minimum_frames_per_second, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = 0} },
     };
+
     mp_arg_val_t args[MP_ARRAY_SIZE(allowed_args)];
     mp_arg_parse_all(n_args - 1, pos_args + 1, kw_args, MP_ARRAY_SIZE(allowed_args), allowed_args, args);
 
     framebufferio_framebufferdisplay_obj_t *self = native_display(pos_args[0]);
-    uint32_t maximum_ms_per_real_frame = 0xffffffff;
+    uint32_t maximum_ms_per_real_frame = NO_FPS_LIMIT;
     mp_int_t minimum_frames_per_second = args[ARG_minimum_frames_per_second].u_int;
     if (minimum_frames_per_second > 0) {
         maximum_ms_per_real_frame = 1000 / minimum_frames_per_second;
     }
-    return mp_obj_new_bool(common_hal_framebufferio_framebufferdisplay_refresh(self, 1000 / args[ARG_target_frames_per_second].u_int, maximum_ms_per_real_frame));
+
+    uint32_t target_ms_per_frame;
+    if (args[ARG_target_frames_per_second].u_obj == mp_const_none) {
+        target_ms_per_frame = NO_FPS_LIMIT;
+    } else {
+        target_ms_per_frame = 1000 / mp_obj_get_int(args[ARG_target_frames_per_second].u_obj);
+    }
+    return mp_obj_new_bool(common_hal_framebufferio_framebufferdisplay_refresh(self, target_ms_per_frame, maximum_ms_per_real_frame));
 }
 MP_DEFINE_CONST_FUN_OBJ_KW(framebufferio_framebufferdisplay_refresh_obj, 1, framebufferio_framebufferdisplay_obj_refresh);
 
diff --git a/shared-bindings/framebufferio/FramebufferDisplay.h b/shared-bindings/framebufferio/FramebufferDisplay.h
index 96d39e6aef..87f57b0aaa 100644
--- a/shared-bindings/framebufferio/FramebufferDisplay.h
+++ b/shared-bindings/framebufferio/FramebufferDisplay.h
@@ -36,6 +36,7 @@
 extern const mp_obj_type_t framebufferio_framebufferdisplay_type;
 
 #define NO_BRIGHTNESS_COMMAND 0x100
+#define NO_FPS_LIMIT 0xffffffff
 
 void common_hal_framebufferio_framebufferdisplay_construct(framebufferio_framebufferdisplay_obj_t *self,
     mp_obj_t framebuffer,
diff --git a/shared-module/displayio/Display.c b/shared-module/displayio/Display.c
index 5d9cc2357c..94f29d2c93 100644
--- a/shared-module/displayio/Display.c
+++ b/shared-module/displayio/Display.c
@@ -354,7 +354,7 @@ uint16_t common_hal_displayio_display_get_rotation(displayio_display_obj_t *self
 
 
 bool common_hal_displayio_display_refresh(displayio_display_obj_t *self, uint32_t target_ms_per_frame, uint32_t maximum_ms_per_real_frame) {
-    if (!self->auto_refresh && !self->first_manual_refresh && (target_ms_per_frame != 0xffffffff)) {
+    if (!self->auto_refresh && !self->first_manual_refresh && (target_ms_per_frame != NO_FPS_LIMIT)) {
         uint64_t current_time = supervisor_ticks_ms64();
         uint32_t current_ms_since_real_refresh = current_time - self->core.last_refresh;
         // Test to see if the real frame time is below our minimum.
diff --git a/shared-module/framebufferio/FramebufferDisplay.c b/shared-module/framebufferio/FramebufferDisplay.c
index ec59efef4a..df70010a0f 100644
--- a/shared-module/framebufferio/FramebufferDisplay.c
+++ b/shared-module/framebufferio/FramebufferDisplay.c
@@ -283,7 +283,7 @@ uint16_t common_hal_framebufferio_framebufferdisplay_get_rotation(framebufferio_
 
 
 bool common_hal_framebufferio_framebufferdisplay_refresh(framebufferio_framebufferdisplay_obj_t *self, uint32_t target_ms_per_frame, uint32_t maximum_ms_per_real_frame) {
-    if (!self->auto_refresh && !self->first_manual_refresh) {
+    if (!self->auto_refresh && !self->first_manual_refresh && (target_ms_per_frame != NO_FPS_LIMIT)) {
         uint64_t current_time = supervisor_ticks_ms64();
         uint32_t current_ms_since_real_refresh = current_time - self->core.last_refresh;
         // Test to see if the real frame time is below our minimum.