diff --git a/keyboards/karlk90/dzzy/config.h b/keyboards/karlk90/dzzy/config.h
index d3e105cf89a0..b3dd3d4f7dc3 100644
--- a/keyboards/karlk90/dzzy/config.h
+++ b/keyboards/karlk90/dzzy/config.h
@@ -3,8 +3,5 @@
 
 #pragma once
 
-/* USB CONFIG */
-#define FORCE_NKRO
-
 /* SPI DRIVER */
 #define EXTERNAL_EEPROM_SPI_SLAVE_SELECT_PIN B12
diff --git a/keyboards/karlk90/dzzy/dzzy.c b/keyboards/karlk90/dzzy/dzzy.c
index c014792ae6ce..4942c68bfc2e 100644
--- a/keyboards/karlk90/dzzy/dzzy.c
+++ b/keyboards/karlk90/dzzy/dzzy.c
@@ -20,39 +20,39 @@ void keyboard_post_init_user(void) {
 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_custom(void) {
+void matrix_init_pins(void) {
     for (size_t i = 0; i < MATRIX_COLS; i++) {
         setPinInputLow(col_pins[i]);
     }
     for (size_t i = 0; i < MATRIX_ROWS; i++) {
-        setPinOutput(row_pins[i]);
+/* We deliberatly choose "slower" push pull pins,
+ * those are fast enough but with lower driving currents
+ * should produce less EMI noise on the lines. */
+#if defined(__riscv)
+        /* This is actually implemented as a 2MHZ PP output. */
+        palSetLineMode(row_pins[i], PAL_MODE_UNCONNECTED);
+#else
+        palSetLineMode(row_pins[i], (PAL_MODE_OUTPUT_PUSHPULL | PAL_STM32_OSPEED_LOWEST));
+#endif
         writePinLow(row_pins[i]);
     }
 }
 
-bool matrix_scan_custom(matrix_row_t current_matrix[]) {
-    matrix_row_t raw_matrix[MATRIX_ROWS];
-
-    for (size_t row_idx = 0; row_idx < MATRIX_ROWS; row_idx++) {
-        writePinHigh(row_pins[row_idx]);
-        while (readPin(row_pins[row_idx]) != 1)
-            ;
+void matrix_read_cols_on_row(matrix_row_t current_matrix[], uint8_t current_row) {
+    writePinHigh(row_pins[current_row]);
+    while (readPin(row_pins[current_row]) != 1)
+        ;
 
-        raw_matrix[row_idx] = (matrix_row_t)palReadGroup(GPIOA, 0x3F, 0);
+    current_matrix[current_row] = (matrix_row_t)palReadGroup(GPIOA, 0x3F, 0);
 
-        writePinLow(row_pins[row_idx]);
+    writePinLow(row_pins[current_row]);
 
-        /* Wait until col pins are low again. */
-        size_t counter = 0xFF;
-        while ((palReadGroup(GPIOA, 0x3F, 0) != 0) && counter != 0) {
-            counter--;
+    /* Wait until col pins are high again or timer expired. */
+    rtcnt_t start = chSysGetRealtimeCounterX();
+    rtcnt_t end   = start + MS2RTC(REALTIME_COUNTER_CLOCK, 5);
+    while (chSysIsCounterWithinX(chSysGetRealtimeCounterX(), start, end)) {
+        if (palReadGroup(GPIOA, 0x3F, 0) == 0) {
+            break;
         }
     }
-
-    if (memcmp(current_matrix, raw_matrix, sizeof(raw_matrix)) != 0) {
-        memcpy(current_matrix, raw_matrix, sizeof(raw_matrix));
-        return true;
-    }
-
-    return false;
 }
diff --git a/keyboards/karlk90/dzzy/info.json b/keyboards/karlk90/dzzy/info.json
index 89ba505ac374..ab10a88df629 100644
--- a/keyboards/karlk90/dzzy/info.json
+++ b/keyboards/karlk90/dzzy/info.json
@@ -6,12 +6,12 @@
         "lto": true
     },
     "debounce": 5,
-    "diode_direction": "ROW2COL",
+    "diode_direction": "COL2ROW",
     "eeprom": {
         "driver": "spi"
     },
     "features": {
-        "console": false,
+        "console": true,
         "nkro": true
     },
     "matrix_pins": {
diff --git a/keyboards/karlk90/dzzy/rules.mk b/keyboards/karlk90/dzzy/rules.mk
index e9c94dab0b85..3e930e3aacda 100644
--- a/keyboards/karlk90/dzzy/rules.mk
+++ b/keyboards/karlk90/dzzy/rules.mk
@@ -1,4 +1,4 @@
 # Copyright 2020-2023 Stefan Kerkmann (@karlk90)
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-CUSTOM_MATRIX = lite
+DEBUG_MATRIX_SCAN_RATE_ENABLE = yes