diff --git a/custom_components/versatile_thermostat/base_thermostat.py b/custom_components/versatile_thermostat/base_thermostat.py
index 2a4a901..25bbebd 100644
--- a/custom_components/versatile_thermostat/base_thermostat.py
+++ b/custom_components/versatile_thermostat/base_thermostat.py
@@ -464,8 +464,8 @@ class BaseThermostat(ClimateEntity, RestoreEntity):
             self._cycle_min * 60,
             # Needed for time calculation
             get_tz(self._hass),
-            # one digit after the coma for temperature
-            1,
+            # two digits after the coma for temperature slope calculation
+            2,
         )
 
         _LOGGER.debug(
@@ -2095,6 +2095,9 @@ class BaseThermostat(ClimateEntity, RestoreEntity):
                 force,
             )
 
+        # calculate the smooth_temperature with EMA calculation
+        await self._async_manage_window_auto()
+
         self.update_custom_attributes()
         return True
 
diff --git a/custom_components/versatile_thermostat/ema.py b/custom_components/versatile_thermostat/ema.py
index 4f6950d..eb5bca4 100644
--- a/custom_components/versatile_thermostat/ema.py
+++ b/custom_components/versatile_thermostat/ema.py
@@ -14,7 +14,7 @@ MIN_TIME_DECAY_SEC = 0
 # For example when using a half life of 10 minutes a measurement that is 60 minutes ago
 # (if there's nothing inbetween) would contribute to the smoothed value with 1,5%,
 # giving the current measurement 98,5% relevance. It could be wise to limit the alpha to e.g. 4x the half life (=0.9375).
-MAX_ALPHA = 0.9375
+MAX_ALPHA = 0.5
 
 
 class ExponentialMovingAverage:
@@ -73,11 +73,13 @@ class ExponentialMovingAverage:
         self._last_timestamp = timestamp
         self._current_ema = new_ema
         _LOGGER.debug(
-            "%s - alpha=%.2f new_ema=%.2f last_timestamp=%s",
+            "%s - timestamp=%s alpha=%.2f measurement=%.2f current_ema=%.2f new_ema=%.2f",
             self,
+            timestamp,
             alpha,
+            measurement,
             self._current_ema,
-            self._last_timestamp,
+            new_ema,
         )
 
         return round(self._current_ema, self._precision)