An uneven map appears when creating a map on a flat surface

[nanbwrn]

When I used it to build an elevation map for the quadruped robot, I found that even when the robot is on a flat surface, the created map is uneven. This causes the robot to move very unstably. Could you please suggest which parameters should be modified to improve this? Below are my settings for go1_core_param.yaml, go1_example_setup.yaml, and convex_plane_decomposition.yaml.
Thank you all for your responses.

convex_plane_decomposition.txt
go1_core_param.txt
go1_example_setup.txt
plugin_config.txt

[mktk1117]

Hi, it might be because of the initialization.
If you disable the initialization, how it looks like? (you can put false to use_initializer_at_start)