sftp: performance: don't consult config file outside of Fs setup
sftp: performance: don't consult config file outside of Fs setup

olihey/rclone,seuffert/rclone,B4dM4n/rclone,yonjah/rclone,yonjah/rclone,B4dM4n/rclone,yonjah/rclone,olihey/rclone,B4dM4n/rclone,ncw/rclone,olihey/rclone,seuffert/rclone,yonjah/rclone,seuffert/rclone,ncw/rclone,B4dM4n/rclone,ncw/rclone,olihey/rclone,ncw/rclone,seuffert/rclone