diff --git a/conf/modules/lidar_lite.xml b/conf/modules/lidar_lite.xml
index 859146f1de..cc61974102 100644
--- a/conf/modules/lidar_lite.xml
+++ b/conf/modules/lidar_lite.xml
@@ -22,7 +22,7 @@
     <file name="lidar_lite.h"/>
   </header>
   <init fun="lidar_lite_init()"/>
-  <periodic fun="lidar_lite_downlink()" freq="10" autorun="TRUE"/> <!-- for debug -->
+  <periodic fun="lidar_lite_downlink()" freq="4" autorun="TRUE"/> <!-- for debug -->
   <periodic fun="lidar_lite_periodic()" freq="40"/> <!-- poll data, theoretical max is 50Hz (every 20ms) -->
   <makefile>
     <configure name="LIDAR_LITE_I2C_DEV" default="i2c1" case="lower|upper"/>
diff --git a/conf/modules/px4flow.xml b/conf/modules/px4flow.xml
index 8ad5b6394c..fd0edb00bb 100644
--- a/conf/modules/px4flow.xml
+++ b/conf/modules/px4flow.xml
@@ -23,7 +23,7 @@
     <file name="px4flow.h"/>
   </header>
   <init fun="px4flow_init()"/>
-  <periodic fun="px4flow_downlink()" freq="10" autorun="FALSE"/> <!-- for debug -->
+  <periodic fun="px4flow_downlink()" freq="4" autorun="FALSE"/> <!-- for debug -->
   <makefile>
     <configure name="PX4FLOW_NOISE_STDDEV" default="1.0"/>
     <configure name="USE_PX4FLOW_AGL" default="1"/>
diff --git a/conf/modules/px4flow_i2c.xml b/conf/modules/px4flow_i2c.xml
index ea28e94456..21421f1397 100644
--- a/conf/modules/px4flow_i2c.xml
+++ b/conf/modules/px4flow_i2c.xml
@@ -25,7 +25,7 @@
     <file name="px4flow_i2c.h"/>
   </header>
   <init fun="px4flow_i2c_init()"/>
-  <periodic fun="px4flow_i2c_downlink()" freq="10" autorun="FALSE"/> <!-- for debug -->
+  <periodic fun="px4flow_i2c_downlink()" freq="4" autorun="FALSE"/> <!-- for debug -->
   <periodic fun="px4flow_i2c_periodic()" freq="50"/> <!-- poll px4flow for data, max 150Hz -->
   <makefile>
     <configure name="PX4FLOW_I2C_DEV" default="i2c1" case="lower|upper"/>