Isaac ros nvblox mapping

Hi
I am using jetson orin nano jetpack 6.0 and ubuntu 22.04 using ros2 humble
every thing is working fine i tried to save the 3d contruction map from the d435i camera. i found on forum that we have to set decay_tsdf_rate_hz to 0.0 and now its working fine but as you might know the map is not constructing the way it has to like the same pixels sometimes overlap and sometimes do build properly. Is their is a way to overcome this issue or anyone has done it before.
Also I was thinking can i give encoder that to make it more better.
Also I am using lidar
Thank you!