problem of large envelop size

[tyc1998]

Hi! Your code and article give me much help. But recently I found that large -r would lead to raised or dented mesh at borders, which is severely deviated from the output. I know that reduce input -e will solve this problem, at the cost of a substantial increase in time. So could you please give me some advice to set input -e, according to input model and meshsize. With best regards!