it was with destructible building (lastest KSP version), i get some fails , but because of your previous post i pay attention of my landing speed , seem to be OK with 1.8m/s.
6m/s or more is definitively not OK
you may got some issues with flabby rocket , this make some oscillation and because of the mass of our rocket => VAB in fire...
i use a lot of struct to get my rocket rigid