Terrain Following Oscillation in Auto Mode

Hello guys,
I’m using arducopter 4.3.6 stable, in which when we are flying in loiter mode terrain following is quite stable but in auto mode it is oscillating. For rangefinder, we have added support for our radar in 4.3.6, before this we are using 4.0.4 and the result are way better in 4.0.4. we tried to find the issue but unable to conclude any thing yet.
Please look into these log file.
here is my log:
https://1drv.ms/u/s!AijqmGl4v-Tbio010KRjXiar_wjd7A?e=HHs1bq

@Leonardthall worked recently on several improvements of terrain following in Auto Mode.

Maybe you should check out if this stable version already includes his mods.

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