diff --git a/TeensyPwm.cpp b/TeensyPwm.cpp
index 9884bde..670269c 100644
--- a/TeensyPwm.cpp
+++ b/TeensyPwm.cpp
@@ -29,9 +29,10 @@ const uint8_t LCD_D7 = 7;
 const uint8_t LCD_ROWS = 2;
 const uint8_t LCD_COLS = 16;
 
-const uint32_t CYCLE_TIME = 500; // microseconds
+const uint32_t CYCLE_TIME = 250; // microseconds
 const uint32_t DISPLAY_UPDATE_TIME = 5e5; // microseconds
 
+
 const float Ctrl_P = 5.0;
 const float Ctrl_I = 2.0;
 const float Ctrl_D = 0.0;
@@ -64,10 +65,15 @@ void loop() {
 	static float u_curr = 0;
 	static uint16_t newPwm = 0;
 	static uint32_t cycleDelay = 0;
+	static uint32_t maxCycleDelay = 0;
+	static uint32_t cycleCnt = 0;
 
 	uint32_t currentTime = micros();
 	if ((lastCycle + CYCLE_TIME <= currentTime) || (lastCycle > currentTime)) {
 		cycleDelay = currentTime - lastCycle;
+		if (cycleDelay > maxCycleDelay) {
+			maxCycleDelay = cycleDelay;
+		}
 		lastCycle = currentTime;
 		uint16_t adcIn = analogRead(ADC_IN);
 		float u_adc = ((float)adcIn) * U_ref / ((float)ADC_MAX);
@@ -83,13 +89,17 @@ void loop() {
 	currentTime = micros();
 	if ((lastDisplayCycle + DISPLAY_UPDATE_TIME <= currentTime) || (lastDisplayCycle > currentTime)) {
 		lastDisplayCycle = currentTime;
+		cycleCnt++;
+		if (cycleCnt == 60) {
+			maxCycleDelay = 0;
+		}
 		lcd.clear();
 		lcd.setCursor(0, 0);
 		lcd.print(U_des);
 		lcd.setCursor(8, 0);
 		lcd.print(u_curr);
 		lcd.setCursor(0, 1);
-		lcd.print(cycleDelay);
+		lcd.print(maxCycleDelay);
 		float dutyCycle = ((float)newPwm) / ((float)PWM_MAX) * 100.0;
 		lcd.setCursor(8, 1);
 		lcd.print(dutyCycle);