I have noticed with a mesh I import with bad geo, decimate does not help much, but when I tried enable proxy with Decimate 16x, it made a much nicer topology(lost detail aside). Unfortunately I cannot seem to replicate this proxy decimation(decimate 16M mesh to 1M is not same results). I can use the clean clay brush and manually get similar result, but would like this decimation approach proxy feature uses vs current decimation method.