diff --git a/src/main.c b/src/main.c
index 23d86fd..c7d2b58 100644
--- a/src/main.c
+++ b/src/main.c
@@ -383,7 +383,7 @@ struct MPPState {
 #define MPP_TEST_DURATION 10 /* ms */
 
 #define MPP_TEST_STEPS 4
-const int32_t mpp_pwm_offsets[MPP_TEST_STEPS] = {-51, -4, 5, 50};
+const int32_t mpp_pwm_offsets[MPP_TEST_STEPS] = {-3, 4, -21, 20};
 
 static void mpp_run(
 		uint32_t time_in_state, struct MPPState *mpp_state,
@@ -529,7 +529,7 @@ int main(void)
 	fxp_t CURRENT_OFFSET = fxp_from_float(0.049);
 
 	/* if power changes by more than this factor, MPP is tested again */
-	MPP_MAX_POWER_CHANGE_FACTOR = fxp_from_float(0.1f);
+	MPP_MAX_POWER_CHANGE_FACTOR = fxp_from_float(0.2f);
 
 	power_state.vin_avg = 0;
 	power_state.vout_avg = 0;
@@ -623,7 +623,7 @@ int main(void)
 					// disable converter
 					// enable bootstrap pulse with very low duty cycle
 					timer_set_oc_value(TIM1, TIM_CH_CONV, 0);
-					timer_set_oc_value(TIM1, TIM_CH_BOOTSTRAP, 48);
+					timer_set_oc_value(TIM1, TIM_CH_BOOTSTRAP, 24);
 
 					if(time_in_state >= 5) { // bootstrap duration in ms
 						iErr = fxp_div(IERR_LIMIT, fxp_from_int(2));