diff --git a/keyboards/rgbkb/common/common_oled.c b/keyboards/rgbkb/common/common_oled.c
index b6ea6b20af..b6873123b0 100644
--- a/keyboards/rgbkb/common/common_oled.c
+++ b/keyboards/rgbkb/common/common_oled.c
@@ -11,7 +11,8 @@
 #include "oled_driver.h"
 #include "rgb_matrix.h"
 
-// for memcpy
+// for memcpy & snprintf
+#include <stdio.h>
 #include <string.h>
 #include <transactions.h>
 
diff --git a/keyboards/rgbkb/mun/matrix.c b/keyboards/rgbkb/mun/matrix.c
deleted file mode 100644
index 2472d217c7..0000000000
--- a/keyboards/rgbkb/mun/matrix.c
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * ----------------------------------------------------------------------------
- * "THE BEER-WARE LICENSE" (Revision 42):
- * <https://github.com/KarlK90> wrote this file.  As long as you retain this
- * notice you can do whatever you want with this stuff. If we meet some day, and
- * you think this stuff is worth it, you can buy me a beer in return. KarlK90
- * ----------------------------------------------------------------------------
- */
-
-#include "matrix.h"
-#include "atomic_util.h"
-#include "gpio.h"
-
-#define ROWS_PER_HAND (MATRIX_ROWS / 2)
-static const pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
-static const pin_t col_pins[MATRIX_COLS]   = MATRIX_COL_PINS;
-
-void matrix_init_pins(void) {
-    for (size_t i = 0; i < MATRIX_COLS; i++) {
-        setPinInputHigh(col_pins[i]);
-    }
-    for (size_t i = 0; i < ROWS_PER_HAND; i++) {
-        setPinOutput(row_pins[i]);
-        writePinHigh(row_pins[i]);
-    }
-}
-
-void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
-    /* Drive row pin low. */
-    ATOMIC_BLOCK_FORCEON { writePinLow(row_pins[current_row]); }
-    matrix_output_select_delay();
-
-    /* Read all columns in one go, aka port scanning. */
-    uint16_t porta = palReadPort(GPIOA);
-    uint16_t portb = palReadPort(GPIOB);
-
-// clang-format off
-    /* Order of pins on the mun is: A0, B11, B0, B10, B12, B2, A8
-        Pin is active low, therefore we have to invert the result. */
-    matrix_row_t cols = ~(((porta & (0x1 <<  0)) >>  0)   // A0  (0)
-                        | ((portb & (0x1 << 11)) >> 10)   // B11 (1)
-                        | ((portb & (0x1 <<  0)) <<  2)   // B0  (2)
-                        | ((portb & (0x1 << 10)) >>  7)   // B10 (3)
-                        | ((portb & (0x1 << 12)) >>  8)   // B12 (4)
-                        | ((portb & (0x1 <<  2)) <<  3)   // B2  (5)
-                        | ((porta & (0x1 <<  8)) >>  2)); // A8  (6)
-// clang-format on
-
-    /* Reverse the order of columns for left hand as the board is flipped. */
-    //         if (isLeftHand) {
-    // #if defined(__arm__)
-    //             /* rbit assembly reverses bit order of 32bit registers. */
-    //             uint32_t temp = cols;
-    //             __asm__("rbit %0, %1" : "=r"(temp) : "r"(temp));
-    //             cols = temp >> 24;
-    // #else
-    //             /* RISC-V bit manipulation extension not present. Use bit-hack.
-    //             https://graphics.stanford.edu/~seander/bithacks.html#ReverseByteWith32Bits */
-    //             cols = (matrix_row_t)(((cols * 0x0802LU & 0x22110LU) | (cols * 0x8020LU & 0x88440LU)) * 0x10101LU >> 16);
-    // #endif
-    //         }
-
-    current_matrix[current_row] = cols;
-
-    /* Drive row pin high again. */
-    ATOMIC_BLOCK_FORCEON { writePinHigh(row_pins[current_row]); }
-    matrix_output_unselect_delay(current_row, cols != 0);
-}
-
-#if defined(BUSY_WAIT)
-void matrix_output_unselect_delay(uint8_t line, bool key_pressed) {
-    for (int32_t i = 0; i < BUSY_WAIT_INSTRUCTIONS; i++) {
-        __asm__ volatile("nop" ::: "memory");
-    }
-}
-#endif
diff --git a/keyboards/rgbkb/mun/rules.mk b/keyboards/rgbkb/mun/rules.mk
index a682f3aa04..7670e0ee45 100644
--- a/keyboards/rgbkb/mun/rules.mk
+++ b/keyboards/rgbkb/mun/rules.mk
@@ -16,7 +16,7 @@ QUANTUM_LIB_SRC += i2c_master.c
 BOOTMAGIC_ENABLE = no       # Enable Bootmagic Lite
 MOUSEKEY_ENABLE = no        # Mouse keys
 EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = yes        # Console for debug
+CONSOLE_ENABLE = no        # Console for debug
 COMMAND_ENABLE = no         # Commands for debug and configuration
 NKRO_ENABLE = yes           # Enable N-Key Rollover
 AUDIO_ENABLE = no           # Audio output
@@ -38,7 +38,4 @@ OPT = 3
 
 OPT_DEFS += -DOLED_FONT_H=\"keyboards/rgbkb/common/glcdfont.c\"
 
-# matrix optimisations
-SRC += matrix.c
-
 DEFAULT_FOLDER = rgbkb/mun/rev1
diff --git a/keyboards/rgbkb/sol3/rules.mk b/keyboards/rgbkb/sol3/rules.mk
index 6f04c5ec96..de9f7185cf 100644
--- a/keyboards/rgbkb/sol3/rules.mk
+++ b/keyboards/rgbkb/sol3/rules.mk
@@ -16,7 +16,7 @@ QUANTUM_LIB_SRC += i2c_master.c
 BOOTMAGIC_ENABLE = yes      # Enable Bootmagic Lite
 MOUSEKEY_ENABLE = yes       # Mouse keys
 EXTRAKEY_ENABLE = yes       # Audio control and System control
-CONSOLE_ENABLE = yes        # Console for debug
+CONSOLE_ENABLE = no        # Console for debug
 COMMAND_ENABLE = no         # Commands for debug and configuration
 NKRO_ENABLE = yes           # Enable N-Key Rollover
 AUDIO_ENABLE = yes          # Audio output
@@ -42,8 +42,4 @@ OPT = 3
 
 OPT_DEFS += -DOLED_FONT_H=\"keyboards/rgbkb/common/glcdfont.c\"
 
-# TODO: Implement fast matrix scanning
-# matrix optimisations
-# SRC += matrix.c
-
 DEFAULT_FOLDER = rgbkb/sol3/rev1