diff --git a/src/bin/piano_firmware.rs b/src/bin/piano_firmware.rs
index 2055aa0..605d350 100644
--- a/src/bin/piano_firmware.rs
+++ b/src/bin/piano_firmware.rs
@@ -465,7 +465,7 @@ async fn main(_spawner: Spawner) {
     let scl = p.PIN_17;
 
     let mut i2c_config = i2c::Config::default();
-    let freq = 400_000;
+    let freq = 1_000_000;
     i2c_config.frequency = freq;
     let i2c = i2c::I2c::new_blocking(p.I2C0, scl, sda, i2c_config);
 
diff --git a/src/matrix.rs b/src/matrix.rs
index 8142d00..4226dd9 100644
--- a/src/matrix.rs
+++ b/src/matrix.rs
@@ -62,7 +62,7 @@ impl<const N_ROWS: usize, const N_COLS: usize> KeyMatrix<N_ROWS, N_COLS> {
 
         // scan frequency
         // this might(?) panic if the scan takes longer than the tick
-        let mut ticker = Ticker::every(Duration::from_millis(8));
+        let mut ticker = Ticker::every(Duration::from_micros(3600));
 
         let chan = midi::MidiChannel::new(0);
         const MAX_NOTES: usize = 128;
@@ -80,7 +80,7 @@ impl<const N_ROWS: usize, const N_COLS: usize> KeyMatrix<N_ROWS, N_COLS> {
         loop {
             let profile: bool = counter == 0;
             counter += 1;
-            counter %= 50;
+            counter %= 500;
             let prof_start = Instant::now();
             let mut prof_time_last_col = prof_start;
             let mut prof_dur_col = Duration::from_ticks(0);