Odometry issue with two d435i

Hello,

I am sorry this question is not related to realsense hardware. I am trying rtabmap with two d435i with the following launch file.

Launch file:
[two_rs.txt](https://github.com/introlab/rtabmap_ros/files/6894609/two_rs.txt)

But there is an issue with odometry lost. It is very frequent with two realsense devices then one. Any light on the same? Any issue with the launch file?