X4 laser sensor limited range

After i run command "X4_SENSOR_CONFIG_4=1 roslaunch subt_example team.launch", the range of the laserscan in only coming less than than 1 as also shown by below screenshot:  This was happening for the X2 robot also when i used command: "X2_SENSOR_CONFIG_3=1 roslaunch subt_example team.launch":  But after i replaced the sensor part of the planar_lidar.urdf.xacro file with below code the range is coming fine for X2 robot:0 0 0 0 0 0false407201-1.5707961.5707960.1030.00.01gaussian0.00.01${topic}${name}${robot_namespace} But still the range of X4 laser scan is under 1. I am running system with 8 gb ram, 300 gb free HD, ubuntu 18.04, and ros melodic with gazebo 9 as described in catkin install tutorial of this subt repository. But im not using any dedicated nvidia gpu, i'm using i5 3rd gen intel cpu.