Can u explain, what it all get done, while LR happens??
Thankfully, u moved from 10 to 15-25 minutes (however 15-25 minutes too do have 10 minutes difference)!!
Further, Slack gets induced as if train dont have LR, it can move direct and cover lost time, which isnt the same case while LR (where train gets blocked to complete the minimum obligation of reversal)!!
Further,...
more... TT consider the same & explains how LR happening in 1 Minute, as per initial query!!