How to change label in "hcluster" command

Hi all.
I have been running hcluster to cluster my metagenomics 16S data. Hcluster very slowly because label is 0.01, 0.02, 0.03… 0.1 respectively. But i need only some label (0.01, 0.03, 0.05 and 0.1). How to fix label in hcluster?. What should I do?

My command: hcluster(colum=.dist, name=.names, cutoff=0.1, method=furthest)


Please don’t use hcluster. It’s memory and speed are horrible.