Mh_tune_jscale : How much does it slow down the chain compution?

Thank you, but is it stored there directly after the tuning phase is over? Or only once the MCMC run is completed? I checked the mh_history file after an aborted run because I wanted to know which parameter the tuning procedure had set, but I don’t think record.ProposalScaleVec was there.
Best,
Ansgar